Paul Merson believes Ruben Amorim may regret having taken the Manchester United job.

The Reds head coach has had a challenging start at Old Trafford since joining from Sporting CP in November. Amorim has only managed to secure six wins out of his 16 games in charge of United, who currently sit 13th in the Premier League table after 22 matches, their lowest position at this stage of the season.

Despite this, the 39-year-old has led the team to notable victories against Manchester City and Arsenal, as well as a commendable draw against Liverpool at Anfield. It is also widely acknowledged that the Portuguese has been handed a difficult task with a squad of players who do not fit the system he was brought in to implement at M16.

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But Merson has shared his concern for the Amorim project at Old Trafford, stating his belief that the job is much bigger than the young manager may have first realised.

"This man's 39 years of age. I mean, there are players just finishing their footballing careers at 38," he said on Sky Sports' Soccer Saturday.

"He's young and in management, really young. He's done well in Portugal, he's coming to one of the biggest clubs in the world, by far not the best team in the world, but one of the biggest clubs in the world.

"And he's finding it hard. The pressure's on him. Someone's obviously said to him, you need to backtrack on that and start blaming yourself a little bit here because the players won't have that, they won't have that, they won't be sitting there saying that, but it's gonna be hard for him.

"I don't see where this turns around. With the Tottenham one, I can see the players when they get back I think, 'oh yeah, they'll cause teams problems on their day,' especially the way they play.

"I think the manager will be sitting there deep down and thinking, 'should I have taken this job?' He didn't want to take it to the end of the season and I think, I think he'll be sitting there now thinking. 'I ain't sure I can do this job.'

"I don't think it's just him. I think any manager, I think you're looking at financial fair play rules and how far they're behind now, and look where they are in their league, they're 13th in the league Bournemouth have got better players. I mean, when has that ever happened?"