Anthony Martial is set to be fined after failing to train since leaving Manchester United's US tour.

Martial left midway through the tour to attend the birth of his second child, but angered Mourinho by not rejoining the squad for the final two games.

The forward has not been back at United's training ground since the birth of his son a week ago, which has angered boss Jose Mourinho and led to Martial facing disciplinary action.

United do not believe Martial – who wants to quit the Reds – has trained for the past eight days since leaving the tour and are ready to hit him with a £180,000 fine – two weeks' wages.

Mourinho wants to offload Martial, after coming to the conclusion the 22-year-old forward is simply not mentally strong enough to play under him, with United wanting £70million for him.

(Image: AFP)

But United are struggling to sign a replacement for Martial before the Premier League transfer window closes on August 9, with Inter Milan and Croatia star Ivan Perisic having emerged as Mourinho's top target.

After United ended their US tour with a 2-1 win in Miami over reigning European champions Real Madrid, Mourinho was asked if Martial would be leaving.

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Mourinho dodged that question, saying: “Anthony Martial is better for Karen [United's press officer] to answer if she wants to answer.”

The United boss was pressed on whether Martial would be part of his squad upon their return to Manchester and would only say: “I don't know.”

(Image: John Peters)

(Image: Getty)

Mourinho is convinced he will only be able to sign one player before the transfer deadline, with £65m-rated Leicester and England defender Harry Maguire looking the likeliest arrival at United.

United boss Mourinho revealed Romelu Lukaku, Marcus Rashford and Phil Jones are all cutting short their post-World Cup holidays by three days to return to pre-season training.

The trio could be available for United's Premier League opener at home to Leicester on August 10, with Mourinho praising their willingness to return to training earlier than expected.

But the United boss made no mention of his other World Cup stars still on holiday - Paul Pogba, Jesse Lingard, Ashley Young and Marouane Fellaini – making the same gesture.

(Image: Getty Images Europe)

(Image: Paul Pogba/Twitter)

Mourinho spoke of the fantastic spirit in the “majority” of his players, clearly a pointed reference to Martial and his unwillingness to return to training or rejoin the squad.

“We start the Premier League in nine days,” said Mourinho. “These are the players that we have, plus Victor Lindelof, who started training two days ago.

“Plus we have Rashford, Jones and Lukaku because they gave to the group and to the team three days of their holidays, so they're coming back three days early to try and be available for the team.

“They're not prepared, but they'll be back, and that's the spirit we need, because our first two or three weeks in the Premier League are going to be really hard for us because we didn't prepare for that.

(Image: John Peters)

“And with the fantastic spirit we have in the majority of the players, I repeat - in the majority of the players we have a fantastic spirit - we go with everything we have to go to the Premier League."

Mourinho cut a downbeat figure throughout United's five-game tour of the US and continued that theme by claiming he learned nothing from their victory over Real.

"I didn't learn anything," said Mourinho. "I know what Ander Herrera, Juan Mata and Alexis Sanchez are, I know the kids are very young and need time to grow up.

"I know that my players gave everything and in the last 15 minutes we were dead and they bring on Marco Asensio and Isco, and I thought we wouldn't resist it.

"But the boys tried everything, gave everything and we always have to try to fight for the best result.

(Image: Man Utd via Getty)

(Image: Getty)

"We tried, with the players we had available, to organise the best possible team to defend against them. We were just trying to survive and have the best possible results.

"But, as I was saying to the players, some of my players will be in an amazing condition. Imagine Alexis Sanchez fresh, the way the man is running after playing four matches, 90 minutes.

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"I think he's in a fantastic condition, so let's look at it from a positive side and wait for Lindelof, Rashford, Lukaku and Jones, which are going to be four important players for us.

"They will not be prepared, but they will be back, and that's the spirit we need, because I think our first two or three weeks in the Premier League - Leicester, Brighton, Tottenham - I think these two weeks are going to be really hard for us because we didn't prepare for that and that's what it is."