Manchester United's players were pictured leaving the club's Carrington training ground after being put through their paces just hours after arriving back from Turin.
There has been no rest for Jose Mourinho's stars on a huge week for the club - they faced Juventus in the Champions League and now have rivals City on Sunday.
The players are understood to have arrived back from their win in Turin on the early hours of Thursday morning, before staying together as a squad that night.
They then trained on Thursday, before being spotted heading out of the training ground in their respective cars at 6pm to conclude a hectic couple of days.