Manchester United players are on the receiving end of a furious message after their 4-1 loss to Como leaves Michael Carrick fighting for his future as head coach

Alan Shearer has demanded that Bruno Fernandes and Lisandro Martinez do their jobs on the pitch for Manchester United rather than be outspoken after their matches.

Fernandes and Martinez have used interviews after the last two Champions League games to vent their frustrations. The latter lamented United's lack of signings made by director of football Jason Wilcox during this summer's transfer window after the 2-0 loss to Atletico Madrid.

A week later, their captain questioned the tactical approach of Carrick and his staff following their 4-1 defeat to Como. Shearer, however, has turned his attention to Fernandes for his performances.

The former England and Newcastle United captain brutally told Betfair: "I look at what's happening in the last week with Martinez coming out and saying what he did, then Bruno Fernandes coming out and saying what he did after the game.

"Any chance of you doing your job, lads, as players? Because I didn't see too much effort, too much commitment, and too much running around from Bruno last night.

"Wherever you go, at all clubs, there's player power. That's the game that we're in now, whether you like it or not. But you also have to take responsibility as an individual."

Shearer continued to question to player's displays this season, saying: "I mean, Bruno Fernandes is the captain of Manchester United. You can't be coming out and saying that against your manager and dropping your manager or your staff in it when you yourself, as an individual, have had a really poor game and a really poor season.

"He was player of the year last year. We haven't seen any of that from Bruno Fernandes this season.

"So, it's alright him coming out and criticising the manager, but is there any chance of him playing well this season? Same as Lisandro Martinez.

"When your captain comes out and criticises the manager, it puts more pressure on the football club. A captain shouldn't be coming out, and especially after a game and after a result like that.

"It would have been far better for Bruno to come out and say we're hopeless as a team, and I, as captain, accept responsibility for that, rather than trying to blame everything on his manager, especially when he's been that poor himself as an individual. I mean, the manager took him off, and he probably had the hump for that."

Carrick is set to take charge of United's next match, against Bournemouth at Old Trafford on Sunday.