Paul Merson 'cannot believe' one detail about Mason Mount's move from Chelsea to Man Utd

Paul Merson 'cannot believe' one detail about Mason Mount's move from Chelsea to Manchester United.

Mount completed his medical at Carrington training facility on Monday, and looks set to sign a five-year deal worth a reported £250,000 per week.

The 24-year-old is expected to say his goodbyes to Chelsea in the coming hours before an official announcement is made by both clubs.

Mount has been the subject of interest from a number of different clubs after failing to agree over the terms of a new deal at Stamford Bridge.

Liverpool were among those interested, but were deterred by Chelsea's asking price, according to The Athletic.

However, Merson can't believe why more clubs weren't interested in the midfielder, suggesting United fans should be over the moon with the signing.

Merson explains Mount's decision to leave Chelsea

Writing in his column for Sky Sports about Mount's move to Old Trafford, Merson revealed that the England international's decision to move clubs may have been prompted by Chelsea's treatment of their news signings.

"When you're a player coming through the ranks, it's not the same as someone who has been bought. If you're playing £50m for someone, they are an asset, so they get looked after," explained the former Arsenal midfielder.

"When I went to Middlesbrough I was treated like a king. I sneezed and there was a tissue there!

"Mount has probably thought, 'why am I getting treated differently to everyone else, why am I not getting the money these other players are getting?'"

Merson was also left shocked that more clubs didn't try to sign Mount this summer, waxing lyrical about the Portsmouth-born midfielder.

"Let's remember, he was the best player in the team the year before last and won Player of the Year twice.

"I cannot believe only one club was after Mount. He's proven in the Premier League, before his injury last season he was nailed on to start for England and he was the best player in a good Chelsea team.

"If I supported Manchester United, I'd be more than happy with the signing. He gives you energy, gets on the ball, on the half-turn, looks forward all the time. The kid is a proper player, a special player."