GALLERY: Manchester United Pre-Chelsea Match Training

Manchester United have released pictures from their Friday morning training session at the AoN training complex, with some welcomed return of players to the fold. Antonio Valencia, Ander Herrera and Chris Smalling all trained with the first-team, giving Louis van Gaal a boost before the visit of Chelsea on Sunday.

See photographs from Friday mornings training session below, courtesy of Man Utd/Getty Images.