Mason Mount has previously revealed he fell "in love" at Old Trafford amid reports Manchester United are plotting a move for the Chelsea star.
Mount is out of contract with Chelsea in 2024 and negotiations have stalled over a new deal for the England international.
The 24-year-old, who has been named Chelsea's Player of the Season in the last two campaigns, has rejected the offer a new long-term deal, with the player reportedly unhappy with the terms offered.
Talks are ongoing between Mount and Chelsea but 'little progress has been made', according to the Evening Standard.
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Mount is currently one of the lowest-paid senior players at Stamford Bridge and wants a salary similar to his England teammates.
Chelsea could be forced to sell Mount in the summer if he fails to sign a new deal at the club, or risk losing him for free at the end of the 2023-24 campaign.
Liverpool have been strongly linked with the midfielder, while their rivals Manchester United have now entered the race to sign him, according to The Guardian.
The report claims United have added Mount to a list of attacking midfield targets which includes Borussia Dortmund star Jude Bellingham.
It is claimed that United could look to sign Mount instead of Bellingham, if the club devotes the bulk of their summer transfer budget on Tottenham striker Harry Kane.
Mount, who is a childhood Portsmouth fan, travelled to watch his team take on United when the two sides met in the Premier League in 2008.
In the game, Cristiano Ronaldo scored an iconic free-kick against David James, which had a huge impact on Mount.
The youngster was later filmed recreating Ronaldo's free-kick technique while playing Chelsea's academy.
Mount: I fell in love
Speaking to Amazon Prime after Chelsea's game against United last April, Mount said: "I think everyone has seen the video of when I was younger basing my free-kick off him.
"I always watched him very closely when he was at United as a young kid. I loved the way he played, his free-kicks.
"I'm a massive Pompey fan, so I went to the game when they played at Old Trafford and he scored that free-kick against David James.
"I was actually at the game, in the corner, so I saw it first-hand and I think after that I kind of fell in love with the technique and what he'd done, and him as a player.
"So I always try to look at and work out, what can I do, to put it into my game? But now to play against him and be up against him is the journey that you go on from watching someone in the stands as a fan and then to being on the same pitch and playing against them.
"It's a crazy journey and yeah, that's why I love football so much."
Topics: Chelsea, Mason Mount, Manchester United, Cristiano Ronaldo, Football, Premier League
Rory O'Callaghan