Barcelona's Andres Iniesta of FC Barcelona (C) competes for the ball with AC Milan's Riccardo Montolivo. Milan defeated Barcelona 2-0 on Wednesday night.
 

Kevin Prince Boateng celebrates Milan's first goal against Barcelona. The Italian giants later secured a 2-0 victory over Barca at the San Siro.

Barcelona's Pedro Rodriguez competes for the ball with AC Milan's Sulley Muntari. Muntari later scored Milan's second goal in the second half.

Barcelona's Gerard Pique (L) is challenged by Philippe Mexes of AC Milan during the UEFA Champions League Round of 16 first leg match between at the San Siro.
 

Barcelona' Lionel Messi failed to produce anything offensively as his Barca side fell to AC Milan 2-0 at the San Siro.
 

 Klaas-Jan Huntelaar (R) of Schalke is challenged by goalkeeper Fernando Muslera and Semih Kaya of Galatasaray during the UEFA Champions League Round of 16 first leg match between at Turk Telekom Arena.

Didier Drogba (L) made his Champions League debut this season during Galatasaray's 1-1 draw against Jermaine Jones' (R) Schalke 04 side on Wednesday night.

Burak Yilmaz (C) of Galatasaray celebrates his team's first goal with team mates Selcuk Inan (L) and Felipe Melo during the UEFA Champions League Round of 16 first leg match.
 

American midfielder Jermaine Jones celebrates Schalke's equalizing goal during the UEFA Champions League Round of 16 first leg match.

ISTANBUL, TURKEY - FEBRUARY 20: Klaas-Jan Huntelaar (back) of Schalke is challenged by Dany Nounkeu of Galatasaray during the UEFA Champions League Round of 16 first leg match between Galatasaray and FC Schalke 04 at the Turk Telekom Arena on February 20, 2013 in Istanbul, Turkey.
 

Porto's midfielder Joao Moutinho celebrates after scoring during the UEFA Champions League round of 16 first leg match FC Porto vs. Malaga CF at the Dragao stadium in Porto on Tuesday.

Porto's Jackson Martinez battles for the ball with Malaga's Jeremy Toulalan during their Champions League soccer match in Porto on Tuesday.

Malaga's Brazilian midfielder Julio Baptista vies with Porto's French defender Eliaquim Mangala during the UEFA Champions League round of 16 first leg match FC Porto vs Malaga CF at the Dragao stadium in Porto on Tuesday.

Malaga's Brazilian defender Weligton (L) vies with Porto's Argentinian midfielder Lucho Gonzales during the UEFA Champions League round of 16 first leg match FC Porto vs Malaga CF at the Dragao stadium in Porto on Tuesday.

Bayern Munich's German striker Thomas Muller (R) joins the celebration after Bayern's third goal during the UEFA Champions League round of 16 match between Arsenal and Bayern Munich at the Emirates Stadium.

Bayern Munich's Croatian striker Mario Mandzukic (L) goes down under a tackle from Arsenal's Spanish midfielder Mikel Arteta (R). Bayern defeated Arsenal 3-1.

Bayern Munich's German striker Thomas Muller scores their second goal past Arsenal's Polish goalkeeper Wojciech Szczesny.

Bayern Munich's midfielder Bastian Schweinsteiger (L) tangles with Arsenal's midfielder Jack Wilshere (R). Bayern defeated Arsenal 3-1.

Manchester United's Danny Welbeck and Real Madrid's Alvaro Arbeloa fight for the ball during their UEFA Champions League Round of 16 first leg match at Estadio Santiago Bernabeu.

Cristiano Ronaldo scores Real Madrid's equalizer against Manchester United in the first half. Madrid salvaged a 1-1 draw against United on Wednesday night at the Santiago Bernabeu.

Real Madrid's defender Sergio Ramos (down) falls to the ground in pain during the UEFA Champions League round of 16 match against Manchester United.

Manchester United's Danny Welbeck celebrates after scoring United's opener against Real Madrid. The Red Devils take a 1-1 first leg edge back to Old Trafford later next month.

Manchester United's goalkeeper David de Gea (R) stops the ball against Real Madrid. The Spanish keeper helped United grab a 1-1 draw against Madrid Wednesday night.

Real Madrid's forward Cristiano Ronaldo (top) vies with Manchester United's defender Jonny Evans (L). Real Madrid salvaged a 1-1 draw against United Wednesday night.

Shakhtar Donetsk's Taison challenges Borussia Dortmund's Lukasz Piszczek during their Champions League round of 16 match at Donbas Arena Stadium.

Shakhtar Donetsk's Darijo Srna celebrates after scoring against Borussia Dortmund. Dortmund grabbed a late equalizer and will take a 2-2 draw back to Germany in March.

Shakhtar Donetsk celebrates after scoring against Borussia Dortmund during their Champions League round of 16 match.

Mikael Lustig with Juventus' Claudio Marchisio for possession during UEFA Champions League Round of 16 first leg match at Celtic Park.

VALENCIA, SPAIN - FEBRUARY 12: Sofiane Feghouli of Valencia CF duels for the ball with Blaise Matuidi of Paris Saint-Germain during the UEFA Champions League Round of 16 first leg match between Valencia CF and Paris St Germain at Estadi de Mestalla on February 12, 2013 in Valencia, Spain.

 Alessandro Matri of Juventus beats Celtic goalkeeper Fraser Forster to score the opening goal during the UEFA Champions League Round of 16 first leg match between Celtic and Juventus at Celtic Park Stadium.

Celtic's midfielder Scott Brown (top) vies with Juventus's midfielder Andrea Pirlo (L) during the UEFA Champions League match between at Celtic Park.

Valencia's Sofiane Feghouli duels for the ball with PSG's Blaise Matuidi. The French giants secured a 2-0 first leg victory over the Spanish side at the Mestalla.

Celtic fans show their support prior to the UEFA Champions League round of 16 first leg match between Celtic and Juventus at Celtic Park.

PSG midfielder Lucas Moura fires a shot wide past Valencia goalkeeper Guaita. Moura made his Champions League debut in a 2-0 victory over Los Che.

PSG winger Ezequiel Lavezzi (L) vies with Valencia's Daniel Parejo during the UEFA Champions League round of 16 first leg match at the Mestalla.

PSG's supporters celebrate their team's first goal against Valencia. PSG eventually secured a two-goal advantage back to Parc de Princes Tuesday night.

Celtic fans go out in full force before The Bhoys Champions League match against Juventus at Celtic Park.