The draw for the round of 16 of the Champions League took place in Nyon, Switzerland on Thursday, and some enticing ties await.
Primera Division champions Real Madrid have been paired with Manchester United as Cristiano Ronaldo returns to Old Trafford in the first knockout stage.
Furthermore, 2011 winners Barcelona will have to deal with Italian giants AC Milan in what promises to be yet another mouthwatering tie.
Last season's finalists Bayern Munich take on Arsene Wenger's Arsenal as they aim to make it to their third final in five years' time.
Serie A powerhouse Juventus will have to deal with Celtic in the first knock-out stage, while Schalke meet Turkish giants Galatasaray.
Group winners will be away in the first legs on February 12-13 and February 19-20 and at home in the return matches on March 5-6 and 12-13.
The draw for the quarter-finals will be held on March 15, and the final is at Wembley Stadium on May 25.