Manchester City will clash with Real Madrid in the Champions League after being drawn together in Group D.
The two giants of European football will face each other head to head in the group stages, which kick off next month. They will also take on Ajax and Borussia Dortmund in the difficult group.
Real Madrid's Cristiano Ronaldo is one of the best attackers in the world and enjoyed a sensational 2011-12 season.
Ronaldo scored 46 goals in La Liga, helping Real Madrid to the title. He added 10 more goals in the Champions League, including goals in the round of 16 against CSKA, in the quarterfinals against APOEL, and in the semifinal against Bayern Munich.
Chelsea, who won the tournament in May, face a tough test after being drawn in the same group as Italian giants Juventus, Shakhtar Donetsk and Nordsjaelland.
Manchester United will be pleased to go against Braga, Galatasaray and Cluj, while Arsenal will be confident in a group with Schalke, Olympiakos and Montpellier.
Celtic, however, face daunting matches against a dominate Barcelona team, as well as games against Spartak Moscow and Benfica.
Here's a complete list of the group matches of this year's Champions League tournament:
GROUP A
Porto
Dynamo Kiev
Paris St Germain
Dinamo Zagreb
GROUP B
Arsenal
Schalke
Olympiakos
Montpellier
GROUP C
AC Milan
Zenit St Petersburg
Anderlecht
Malaga
GROUP D
Real Madrid
Manchester City
Ajax
Borussia Dortmund
GROUP E
Chelsea
Shakhtar Donetsk
Juventus
Nordsjaelland
GROUP F
Bayern Munich
Valencia
Lille
BATE Borisov
GROUP G
Barcelona
Benfica
Spartak Moscow
Celtic
GROUP H
Manchester United
Braga
Galatasaray
Cluj
