Sporting's Anderson Polga (L-R), Renato Neto, Onyewu and goalkeeper's coach Nelson react after losing their Portuguese Cup final soccer match against Academica at National Stadium in Jamor May 20, 2012. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (L) and Onyewu react after losing their Portuguese Cup final soccer match against Academica at National Stadium in Jamor May 20, 2012. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Academica's Marinho (C) heads the ball for goal between Sporting's Anderson Polga and goalkeeper Rui Patricio during their Portuguese Cup final soccer match at National Stadium in Jamor May 20, 2012. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Academica's Marinho (C) celebrates his goal with teammate Adrien beside Sporting's Anderson Polga during their Portuguese Cup final soccer match at National Stadium in Jamor May 20, 2012. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Porto's Silvestre Varela (R) battles for the ball with Sporting Lisboa's Anderson Polga during their Portuguese Premier League soccer match at the Dragao stadium in Porto May 5, 2012. REUTERS/Miguel Vidal (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga celebrates a goal against Athletic Bilbao during their Europa League semi-final second leg soccer match at San Mames stadium in Bilbao April 26, 2012. REUTERS/Vincent West (SPAIN - Tags: SPORT SOCCER) 

Athletic Bilbao's Fernando Amorebieta (L) heads the ball with Sporting's Anderson Polga (C) and Carrillo Diaz during their Europa League semi-final first leg soccer match at Alvalade stadium in Lisbon April 19, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's captain Anderson Polga listens to a question during a news conference at the Alvalade stadium in Lisbon April 18, 2012. Sporting will face Athletic Bilbao for their Europa League semi-final first leg soccer match on Thursday. REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's coach Ricardo Sa Pinto talks with player Anderson Polga during a news conference at the Alvalade stadium in Lisbon April 18, 2012. Sporting will face Athletic Bilbao for their Europa League semi-final first leg soccer match on Thursday.
REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (L) fights for the ball with Benfica's Axel Witsel during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon April 9, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Benfica's Nico Gaitan (L) is tackled by Sporting's Anderson Polga during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon April 9, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Metalist Kharkiv's Jonathan Cristaldo (C) celebrates scoring a goal as Sporting's Xandao (L) and Anderson Polga react during the second leg of their Europa League quarter-final soccer match in Kharkhiv's Metalist Stadium April 5, 2012. REUTERS/Gleb Garanich (UKRAINE - Tags: SPORT SOCCER)

Sporting's Anderson Polga (R) fights for the ball with Metalist's Taison during their Europa League quarter final first leg soccer match at Alvalade stadium in Lisbon March 29, 2012.
REUTERS/Jose Manuel Ribeiro (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (4) fights for the ball with Manchester City's Edin Dzeko during their Europa League first leg round of 16 soccer match at Alvalade stadium in Lisbon March 8, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting Lisbon's Anderson Polga fights for the ball with Legia Warsaw's Maciej Rybus (C) during their Europa League second leg round of 32 soccer match at Alvalade stadium in Lisbon February 23, 2012. REUTERS/Marcos Borga (PORTUGAL - Tags: SPORT SOCCER) 

Sporting Lisbon's Anderson Polga (R) jumps for the ball with Legia Warsaw's Maciej Rybus during their Europa League second leg round of 32 soccer match at Alvalade stadium in Lisbon February 23, 2012. REUTERS/Marcos Borga (PORTUGAL - Tags: SPORT SOCCER) 

Porto's Nicolas Otimendi (R) reacts after a missed scoring opportunity near Sporting's Anderson Polga during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon January 7, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (L) and Stefanus Schaars (C) try to head the ball with Porto's Otamendi during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon January 7, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (L) jumps for the ball with Porto's Hulk during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon January 7, 2012. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Benfica's Ruben Amorim (5) fights for the ball with Sporting's Anderson Polga during their Portuguese Premier League soccer match at Luz stadium in Lisbon November 26, 2011. REUTERS/Marcos Borga (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Evaldo Fabiano (L) celebrates his goal with Anderson Polga (2nd-L), Daniel Carrico (2nd-R) and Stefanus Schaars during their Europa League Group D soccer match against FC Vaslui at Alvalade stadium in Lisbon October 20, 2011. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga tries to control the ball during their Europa League Group D soccer match against Lazio at Alvalade stadium in Lisbon September 29, 2011. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (R) fights for the ball with Maritimo's Olberdam Serra during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon August 28, 2011. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Porto's Walter da Silva (L) battles for the ball with Sporting Lisboa' Anderson Polga during their Portuguese Premier League soccer match at Dragao stadium in Porto April 17, 2011. REUTERS/Miguel Vidal (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (top) is tackled by Rangers' Steven Whittaker during their Europa League round of 32, second leg soccer match at Alvalade stadium in Lisbon February 24, 2011. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Rangers' Kyle Lafferty (R) falls through the air after the tackle from Sporting's Anderson Polga (C) during their Europa League round of 32, first leg soccer match in Glasgow, Scotland February 17, 2011. REUTERS/David Moir (BRITAIN - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (back) fights for the ball with Portimonense's Pires during their Portuguese Premier League soccer match at Algarve stadium in Faro December 5, 2010. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga celebrates his goal against Lille during their Europa League Group C soccer match at Alvalade stadium in Lisbon December 1, 2010. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) 

Porto's Falcao (R) celebrates his goal beside Sporting's Anderson Polga during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon November 27, 2010. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Pazos de Ferreira's Mario Rondon (R) and Sporting's Anderson Polga battle for the ball during their Portuguese Premier League soccer match at Mata Real stadium in Pazos de Ferreira August 14, 2010. REUTERS/Miguel Vidal (PORTUGAL - Tags: SPORT SOCCER) 

Adam Johnson of Manchester City (R) dribbles past Anderson Polga of Sporting Clube de Portugal during the first half of their soccer match at Red Bull Arena in Harrison, New Jersey July 23, 2010. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (R) celebrates his goal against Atletico Madrid with teammate Miguel Veloso during their Europa League last 16, second leg soccer match at Alvalade stadium in Lisbon March 18, 2010. REUTERS/Nacho Doce (PORTUGAL - Tags: SPORT SOCCER) 

Sporting players celebrate Anderson Polga's goal in front of Atletico Madrid's Manuel Jurado (C) during their Europa League last 16, second leg soccer match at Alvalade stadium in Lisbon March 18, 2010. REUTERS/Nacho Doce (PORTUGAL - Tags: SPORT SOCCER) 

Sporting's Anderson Polga (L) celebrates his goal against Atletico Madrid with teammate Miguel Veloso during their Europa League last 16, second leg soccer match at Alvalade stadium in Lisbon March 18, 2010. REUTERS/Hugo Correia (PORTUGAL - Tags: SPORT SOCCER) 

Atletico Madrid's Kun Aguero (R) controls the ball next to Sporting's Anderson Polga during their Europa League last 16, second leg soccer match at Alvalade stadium in Lisbon March 18, 2010. REUTERS/Hugo Correia (PORTUGAL - Tags: SPORT SOCCER) 

Benfica's Pablo Aimar (10) fights for the ball with Sporting's Anderson Polga during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon November 28, 2009. REUTERS/Hugo Correia (PORTUGAL SPORT SOCCER) 

Sporting's (from L) Anderson Polga, Liedson Muniz and Simon Vukcevic challenge Braga's goalkeeper Eduardo Carvalho and Paulo Cesar during their PortuguesePremier League soccer match at Alvalade stadium in Lisbon August 22, 2009. REUTERS/Jose Manuel Ribeiro (PORTUGAL SPORT SOCCER) 

Sporting's Adrien (R) and team mate Anderson Polga head a ball over Amadora's Vidigal during their Portuguese Premier League soccer match at Alavalade stadium in Lisbon April 25, 2009. REUTERS/Jose Manuel Ribeiro (PORTUGAL SPORT SOCCER) 

Leixoes' Nuno Silva (L) jumps for the ball with Sporting Lisboa's Anderson Correa Polga during their Portuguese Premier League soccer match at Mar stadium in Leixoes April 5, 2009. REUTERS/Miguel Vidal (PORTUGAL SPORT SOCCER IMAGE OF THE DAY TOP PICTURE) 

Benfica's David Suazo (R) of Honduras fights for the ball with Sporting's Anderson Polga of Brazil during their Portuguese League Cup soccer final in Faro, southern Portugal, March 21, 2009. REUTERS/Nacho Doce (PORTUGAL SPORT SOCCER) 

Bayern Munich's French midfielder Franck Ribery (C) dribbles past Anderson Polga (L) and Marat Izmailov of Sporting on his way to scoring during their Champions League soccer match in Lisbon February 25, 2009. REUTERS/Jose Manuel Ribeiro(PORTUGAL) 

Bayern Munich's French midfielder Franck Ribery (C) dribbles past Anderson Polga (L) and Marat Izmailov of Sporting on his way to scoring during their Champions League soccer match in Lisbon February 25, 2009. REUTERS/Jose Manuel Ribeiro(PORTUGAL) 

Sporting's Anderson Polga (L) and Bayern Munich's Bastian Schweinsteiger fight for the ball during their Champions League soccer match at the Alvalade stadium in Lisbon February 25, 2009. REUTERS/Nacho Doce (PORTUGAL) 

Bayern Munich's striker Luca Toni (2nd L) of Italy challenges Derlei (L), Anderson Polga (2nd R) and Fabian Rochemback (R) of Sporting during their Champions League soccer match in Lisbon February 25, 2009. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Spoting's Anderson Polga (R) escapes with the ball in front of Bayern Munich's Bastian Schweinsteiger (C) and Ze Roberto during their Champions League soccer match at the Alvalade stadium in Lisbon February 25, 2009. REUTERS/Nacho Doce (PORTUGAL) 

Sporting's Lidson Muniz (C) celebrates his goal against Benfica with team mates (L-R) Fabio Rochemback, Anderson Polga, Simon Vukcevic and Helder Postiga during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon February 21, 2009. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Braga's Meyong (2nd R) celebrates his goal between Sporting's (L to R) Bruno Pereirinha, goalkeeper Rui Patricio, Derlei and Anderson Polga during their Portuguese Premier League soccer match at Alavalade stadium in Lisbon February 8, 2009. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Sporting's Anderson Polga (L) and mate Daniel Carrico (C) are challenged by Luiz Duarte during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon December 20, 2008. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

FC Basel's (FCB) Michel Morganella (R) is challenged by Anderson Polga of Sporting during their Champions League soccer match in Basel December 9, 2008. Lisbon won the match. REUTERS/Arnd Wiegmann (SWITZERLAND) 

Sporting's Anderson Polga (L) fights for the ball with Barcelona's Thierry Henry during their Champions League soccer match at Alvalade stadium in Lisbon November 26, 2008. REUTERS/Nacho Doce (PORTUGAL) 

Sporting's Danel Carrico (R) and teammate Anderson Polga challenge Barcelona's Lionel Messi during their Champions League soccer match at Alvalade stadium in Lisbon November 26, 2008. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Sporting's Anderson Polga (top) of Brazil fights for the ball with Leixoes' Diogo Valente during their Portuguese Premier League soccer match at Alvalade stadium in Lisbon November 15, 2008. REUTERS/Nacho Doce (PORTUGAL) 

Porto's Lisandro Lopes (L) reacts near Sporting's Anderson Polga during their Portuguese Cup soccer match at Alvalade stadium in Lisbon November 9, 2008. REUTERS/Marcos Borga (PORTUGAL) 

Porto's Lisandro Lopes (L) jumps for the ball with Sporting's Anderson Polga (C) and Joao Moutinho during their Portugal Premier League match at Alvalade stadium in Lisbon October 5, 2008.Reuters/Hugo Correia 

Benfica's Maxi Pereira (L) and Sporting's Anderson Polga fight for the ball as Hassan Yebda watches during their Portugal Premier League soccer match at Luz stadium in Lisbon September 27, 2008. REUTERS/Jose Manuel Ribeiro (PORTUGAL) 

Sporting's Anderson Polga reacts after their Champions League Group C soccer match against Barcelona at Camp Nou stadium in Barcelona September 16, 2008. REUTERS/Albert Gea (SPAIN) 

Barcelona's Lionel Messi (R) eludes Sporting's Anderson Polga during their Champions League Group C soccer match at Camp Nou stadium in Barcelona September 16, 2008. REUTERS/Albert Gea (SPAIN) 

Barcelona's Lionel Messi (R) eludes Sporting's Anderson Polga during their Champions League Group C soccer match at Camp Nou stadium in Barcelona September 16, 2008. REUTERS/Albert Gea (SPAIN) 

Real Madrid's Arjen Robben (L) fights for the ball with Sporting's Anderson Polga during their Santiago Bernabeu trophy soccer match in Madrid August 27, 2008. REUTERS/Juan Medina (SPAIN) 

Sporting's Anderson Polga (R) challenges Boavista's Mateus Costa during their Portuguese Premier League soccer match at Alavalade stadium in Lisbon May 11, 2008. REUTERS/Jose Manuel Ribeiro (PORTUGAL)