Manchester United youngsters Mason Greenwood and James Garner have trained with the senior squad on Tuesday ahead of the Champions League clash against Valencia.
The Red Devils have already secured their place in the knockout stages of the continental competition and, with a trip to Liverpool on Sunday, manager Jose Mourinho may use the game as a chance to rest some first-team stars.
That would give an opportunity to the likes of 17-year-old pair Greenwood and Garner at the Mestalla and they were seen taking part in the session at Carrington before the squad flies out to Spain.