The England international has been criticised by his manager in recent weeks for his performances in training and on the pitch.
Shaw has struggled with injuries and a loss of form since his move to Manchester United from Southampton in the 2014 summer transfer window.
The 21-year-old has managed to force his way into Mourinho’s first-team plans in recent weeks in the wake of Mourinho’s outspoken criticism of Shaw.
Shaw has made one assist in nine appearances in the Premier League in the 2016-17 season so far.
Speaking to the Manchester Evening News about Shaw’s performances under Mourinho, the club’s former defender Silvestre offered some advice to Shaw.
“I think he is over thinking. That’s his problem,” Silvestre said.
“United’s full backs are there to defend, obviously, but then it is about going forward, charging ahead and putting in good crosses in and helping your team build attacks.
“But Luke isn’t doing that any more. He is thinking twice about whether he should go or not. Should I stay, should I go? His mind is in turmoil.
“He should just go because the other guys are going to cover for him. His best attributes for me are when he is going forward and helping with the attack. In the last third he should be getting to the byline. That’s what Manchester United full backs do. He needs to get back to doing that without thinking about it.”
Shaw moved to Manchester United in a big-money deal from Southampton under Louis van Gaal.
The Red Devils were 2-0 winners against Premier League leaders Chelsea at Old Trafford last weekend.
Manchester United signed four players in the summer transfer window last year.
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