Former Chelsea defender Frank Leboeuf has delivered a stark warning to Manchester United, declaring that the club faces a genuine threat of relegation to the Championship if their current form does not turn around.

Appearing on ESPN, Leboeuf pulled no punches in his assessment of the club's situation under manager Michael Carrick, insisting supporters are right to be concerned.

"It's been a while since you had to panic because we saw the games that they had. There is reason to panic and it's been like that for a while," Leboeuf said.

The 1998 World Cup winner extended his criticism to the playing squad itself, raising serious questions about the players' character and their suitability to represent the club.

"You can't get rid of those players who don't deserve to play for Manchester United, who aren't good enough for Manchester United. They don't have the guts, the courage, the pride of fighting for the club," he added.

Carrick's future under scrutiny

Leboeuf expressed personal sympathy for Carrick but suggested the board could eventually have no choice but to part ways with the manager if results do not improve.

"Nothing is getting good, we don't see any improvement, we don't see how it can be better. Again, I'm all for Michael Carrick. But there is a time when there will be no other choices but getting rid of him. I don't see any solution, I don't see anything getting good, and if they carry on like that, you could see Manchester United getting relegated, which is amazing," Leboeuf concluded.

The comments represent one of the most alarming public assessments of Manchester United's season so far, with Leboeuf stopping well short of ruling out the unthinkable.