Kai Rooney showed off his fitness transformation as he shared snaps from his gym session on Tuesday afternoon.

The 16-year-old son of Wayne and Coleen Rooney wore a vest, beanie hat and tracksuit shorts as he worked out in a swanky gym in a high rise building.

Following the workout, the sportsman, who plays as a forward for Manchester United's youth academy, snapped a selfie for his Instagram stories which showed his image overhaul as he stayed on his fitness regime despite being off-season.

In March, Kai revealed he would be out for the rest of the season in a heartbreaking post on Instagram having enjoyed an impressive campaign so far at Old Trafford after making his debut for the U18s in January.

After an injury, he was forced to watch from the sidelines. In his post he wrote: 'Disappointed to be out for the rest of the season. Back stronger next pre-season.'