The first round of group games get underway later.
Manchester United manager Ole Gunnar Solskjaer believes their summer signings have made them contenders to win trophies this season.
They begin their Champions League campaign later away to Swiss side Young Boys in Bern.
Cristiano Ronaldo, Raphael Varane and Jadon Sancho - who all joined in recent months - should feature.
Solskjaer says the squad's in a good place.
Kick off for their Group F clash is at 5.45.
Then from 8pm, holders Chelsea begin the defence of their title.
They have a home fixture against Zenit St Petersburg in Group H.
Elsewhere, Barcelona and Bayern Munich clash in Group E.
Thursday Morning Sports Update
Aston Villas Youri Tielemans Faces Several Months Injured On The Sidelines
Bundee Aki Dropped From Ireland Squad Ahead Of Next Week's Six Nations Opener
Kfm Recruiting News Journalists
Uini Atonio Has Been Forced To Retire From Rugby Immediately Due To A Serious Heart Problem
Wednesday Morning Sports Update
Connacht Confirm Signing Of Leinster Back-Rower Will Connors
Gavin Green Suspended After Breaching DP World Tour Anti-Doping Policy
