Mario Balotelli and Jerome Boateng had to be pulled apart after a training ground clash on Friday. The Manchester Evening News has released pictures of a confrontation between the duo, which allegedly came about after Balotelli reacted to a tackle from Boateng.
They had to be separated after a heated exchange but are also seen clearing the air with a hug later in the same session.
Both players moved to Eastlands over the summer, with Balotelli joining from Inter Milan and Boateng leaving Hamburg.
There have been several reports of disharmony in the camp this season.