Watch Man Utd - Villarreal online

You can watch Manchester United, Arsenal and Celtic online in the Champions League as they begin their campaign to lift Europe's top trophy.

Champions League holders Manchester United host Spanish club Villarreal, Celtic entertain Danish champions AaB Aalborg and Arsenal travel to the Ukraine to play Dynamo Kiev.

All three matches will be streamed live online on Sky Sports, although you'll have to be a Sky subscriber to watch them.

Other group stage matches being streamed online tonight include Juventus v Zenit St Petersburg and Real Madrid v BATE Borisov.

Highlights of Liverpool's win at Marseille and Chelsea's victory over Bordeaux are available to watch at UEFA.com

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www.uefa.com