Chelsea poster boy Mason Mount has shown off his impressive body transformation while on his summer holidays.

Mount, who was merely a spring chicken plucking away at Derby County two years ago, is now a key player for both Chelsea and England.

The 22-year-old is a reigning champion of Europe, too, having starred for Chelsea throughout their Champions League campaign and finished with his hands on the trophy.

MORE: Eagle-eyed Chelsea fan spots Mason Mount Instagram activity which hints at shirt number change

It’s easy to see why he’s developed so considerably as a footballer when you consider how substantially he has developed physically.

The Premier League is renowned for its physical nature, and it’s safe to say that Mount was not prepared for that when he first joined up with the Chelsea squad.

Compare that to now, with Mount being snapped working out while on his summer holidays, evidently trying to maintain his fitness levels ahead of joining up with the Chelsea squad.

The boy has become a man…

Click here for more of the latest Chelsea news

More must-reads:

TODAY'S BEST
Eagles lose veteran OL to injured reserve
Rangers lose two-time All-Star starting pitcher to injury
Lakers make another big change after firing Darvin Ham
Draymond Green predicts LeBron James' next team
Twins place pivotal outfielder on injured list due to knee issue
Lakers' chances of landing Tyronn Lue not considered 'realistic'
Pirates option struggling former No. 1 overall pick to minors
Doc Rivers, Giannis Antetokounmpo contradict each other on star's injury
Lakers fire HC Darvin Ham after disappointing season
Rangers' Vincent Trocheck downplays second-round showdown with former team
Longtime coach compares Patriots' Drake Maye to two legends
Yankees legend John Sterling shares one regret about retirement decision
NFL media check-in: Who's out, in and staying on TV
ESPN producer gives update on Patrick Beverley snub controversy
Five NFL players with the most to prove after teams declined their fifth-year option
Yankees' Aaron Judge addresses offensive woes creeping into May
Former 49ers quarterback makes feelings on Brock Purdy clear
Bills become latest team to try to fix talented, unproductive wide receiver
Dolphins add another star playmaker on offense
Insider addresses if Patriots will trade for star 49ers WR