Perhaps we will never know what Luke Shaw has done for Jose Mourinho to treat him this way.The 22-year-old’s faltering Manchester United career reached its nadir on Saturday when he was substituted at half-time in the 2-0 win against Brighton.Mourinho admitted after the match that Shaw wasn’t aggressive enough and was vulnerable in defence, comments that will do nothing to boost the left-back’s confidence.“Every time they went in his corridor the cross was coming and the dangerous situation was coming, so I was not happy with the performance,” Mourinho said.Louis van Gaal and Roy Hodgson both raised concerns about Shaw but their worries were centred around his work rate and fitness levels.Mourinho, though, doesn’t seem to be a fan of Shaw’s ability and his fit within the Man United team.

What Joey Barton has said about Shaw's situation

BBC Sport reported on Sunday that the England defender is likely to leave Old Trafford in the summer in a parting of ways that Joey Barton believes is the only solution to the situation.

Speaking on talkSPORT on Monday morning, Barton said Shaw needs to leave and pointed out that he “wasn’t a Mourinho signing”.

Barton believes the former Southampton left-back can still enjoy a good career but believes a “psychological rebuilding process” is required.

“Mourinho kept looking at Luke Shaw like he’s something he’s just stood on while out walking his dog,” Barton said.

“He just doesn’t fancy him - that’s the reality of it.

“You can ruin a young boy’s career, he was a promising young talent.

“He wasn’t a Mourinho signing was he, he’s given him game time but Shaw is clearly devoid of confidence and is not reaching his potential either due to injuries and a lack of belief from those around him.

“Look, at Man United if you don’t perform at the highest level when you’re given the opportunity, they generally go out and buy the best available. That’s what they’ve historically done and I expect them to do the same again.

“I still think Luke Shaw would be a good player wherever he goes, but there will be a psychological rebuilding process for him.

“There’s no way you can go through what he’s going through now at Man United and not come out a little bit mixed up.”

Shaw probably considered it a dream come true when he signed for Man United in 2014, which makes this all the more disappointing.

But it will have dawned on him that he needs to resurrect his career elsewhere.