Mourinho, speaking ahead of United's Champions League clash with Valencia on Tuesday, refused to answer whether he had spoken to executive vice-chairman Ed Woodward following the defeat to West Ham. "The manager isn't on the pitch is he?" he said to reporters.
According to The Sun, Mourinho now has just a week to show the United hierarchy that he is the right man for the job.
But the Serbian star believes the United players are still giving everything to help Mourinho despite the current crisis engulfing the club.
"We needed a good start and we didn't have that good start". It's hard to take. "I look at my team, whatever the other team is doing is not our stuff".
The full-back Luke Shaw said as much after the damaging defeat at the London Stadium at the weekend, and rather than criticising the player for his verdict of "horrendous" on the performance Mourinho said he felt the same way.
Young captained United in Saturday's loss to West Ham while Herrera and Lingard did not feature.
But hopes this might spark a major recovery by the visitors were soon dashed when Marko Arnautović, who played under Mourinho at Inter Milan, restored the Hammers' two-goal lead three minutes later.
"There were big players in the past and I ask these people with great reputations if at any time in their careers they went to a game not to give the maximum, not to help the club, not to make the fans happy and not to try his best".
"That's not good enough".
The boss went on to say he wanted to play Martial but nonetheless criticised the Frenchman for failing to properly observe his defensive duties.
"Today, my blog post is shorter than usual".
Pogba, hauled off in the second half on Saturday, entered the training pitch with Sergio Romero and warmly greeted Mourinho's coaching staff, having given Nemanja Matic a hug. When asked whether he wanted to stop and talk, the midfielder smiled, laughed and said: "You want me dead?"