The left-back’s future at Old Trafford has been clouded in doubt due to his lack of game time.
Earlier in the season, Jose Mourinho also questioned the 21-year-old’s commitment.
But the Portuguese boss has sympathy for Shaw following his double leg fracture last term.
And he has quashed any suggestion the £27million defender will be leaving Manchester United at the end of the campaign.
Luke Shawhas had to be patient to earn opportunities under Jose Mourinho at Manchester United
He will be here for sure
Asked if Shaw would be sold, Mourinho said: “No, no, no. He will be here for sure.
“It (leaving) is out of the question.”
On Shaw’s circumstances surrounding his injury problems, Mourinho added: “What I think is that he had a very ugly injury, really ugly, that affects players not only from the physical point but also the mental impact.
“He has had a couple of small injuries this season and needs to adapt.
Mourinho wants to keep Shaw, despite having preferred Blind and Darmian at left-back for Man United
Man United stars snapped relaxing before Blackburn clash
Sat, February 18, 2017
Manchester United duo Bastian Schweinsteiger and Jesse Lingard were snapped relaxing on Saturday before their FA Cup clash against Blackburn on Sunday
EAMONN AND JAMES CLARK
1 of 6
Jesse Lingard and Bastian Schweinsteiger were snapped out and about today
Luke Shaw has been in training for Manchester United this week ahead of today's FA Cup tie
“He knows what I like in a defender, he knows that I like stability, that I don't like mistakes, that for me it is to trust a player totally and he has to work to get it.
“And when he is on the pitch again he has to try to give me that step by step because he is still only a young player.
“Sometimes people forget he is only a young player with a lot to learn but I like the player and I like the boy.”
Luke Shaw is set to be given a rare start in the United backline today for their FA Cup fifth round trip to Championship outfit Blackburn (4.15pm).