Gary Neville has listed the four major problems Ole Gunnar Solskjaer is facing in the Manchester United dressing room.
The Red Devils have struggled in recent weeks and their form has plummeted, culminating in a 4-2 loss to Leicester on Saturday.
There was hope that the international break would allow some players to reset after disappointing results against Everton and Aston Villa.
But so far nothing has changed while Solskjaer could be in for a tough month with Premier League clashes against Liverpool, Manchester City, Chelsea, Tottenham and Arsenal coming up.
And while the dissent from the fans is growing, Neville has insisted the United coach's biggest problems are within his dressing room.
The Sky Sports pundit revealed that four personalities are clashing at the moment in Cristiano Ronaldo, Bruno Fernandes, Paul Pogba and Harry Maguire.
He said: “The aura of Ronaldo, Fernandes is walking around with his arms out all the time, Pogba doesn’t know if he is staying or leaving, the emerging captain Maguire thinking how he controls this lot.
“Ole has to solve it this week. On Sunday, this lot are an odd bunch, they could out and do Liverpool. They have to get that spirit and dynamic right.”
United face Atalanta next in the Champions League before hosting Liverpool on Sunday, who are in a rampant mood.
A huge defeat could spell danger for Solskjaer, despite the club insisting he is safe.
But after a bright start, United have looked out of sorts and have been unable to even retain possession - let alone land a telling punch on teams - and Neville reckons his former side looked better last season.
He added: “I thought that last season’s there was something building. I think if you asked him privately ‘would like last season’s squad back?’ I think he probably would go back.
“They have got six grenades where the pins have been pulled out in the dressing room.
"It can work, I’ve seen Del Bosque manage a Real Madrid team to the Champions League, Zidane has done it with great players, I think PSG are like that at the moment. You see Pochettino there and you think it’s not really a Pochettino team.
“Ole’s got a bit of that now. He has Cristiano Ronaldo, Bruno Fernandes, Edinson Cavani, Paul Pogba and Harry Maguire.
"Massive characters in the dressing room, Maguire will look at Varane in the dressing room and think am I the top dog anymore?
"You have the dynamic of Cavani sat on the bench who was begged to stay but now has Ronaldo, Rashford and Greenwood in front of him.
"Sancho has come in for £75m and now he is looking like he is in and out.
"All these issues are developing, Solskjaer has to somehow bring that group together.
"He’s got to find a basic defensive shape that the players buy into and allow the others to go win the games for him. It’s the only way for him to get the season back on track."