Manchester United forward Alexis Sanchez has reportedly clashed with youngster Mason Greenwood at the club's training ground.

At a time when Sanchez has been heavily linked with an exit from Old Trafford, the Chile international has also been attempting to shake off a hamstring problem sustained on international duty in order to put himself back into contention.

However, according to The Sun, the attacker was involved in a spat with Greenwood after the prospect made a tackle during training.

The report claims that Sanchez reacted angrily to the challenge as Greenwood looks to impress manager Ole Gunnar Solskjaer.

While Sanchez remains out of the first-team picture, Greenwood was given an opportunity off the bench as United thrashed Chelsea in the Premier League on Sunday afternoon.

Roma are said to be keen to sign the playmaker before the end of the transfer window.