Michael Carrick is running out of time to save his job at Manchester United , with the club poised to ramp up the search for a fourth permanent manager in three years since minority owners Ineos took over football operations.

Carrick – who impressed during his interim spell in charge last season – has come under huge pressure following United’s worst start to a season in 40 years .

That pressure has only intensified after a dismal 4-1 defeat to Como in the Champions League on Wednesday night was followed by a 3-0 defeat to Bournemouth at home on Sunday, with fans streaming out of Old Trafford in their droves during the second half.

While the problems United face run far deeper than the head coach – as highlighted by defender Lisandro Martinez after the defeat to Atletico Madrid earlier this month – Carrick’s appears to be on the brink following criticism of his tactics by the United captain Bruno Fernandes , who was then left on the bench against Bournemouth.

While Carrick remained in charge for Sunday’s…