However, the full-back has started the season in fine form and has reportedly been rewarded with this huge new deal, which also helps United avoid the embarrassment of the player leaving for a cut-price over the next year or on a free transfer at the end of his contract.
"I think personally it's only a matter of time that the success is going to be coming back", added Shaw. "I am delighted that we are keeping such a talented young English player with a bright future ahead of him".
Asked if he had responded to the FA, Mourinho said: "Yes I did, but I don't comment". A match I want to do well in for my players, my team and my supporters, that's what I want.
Mourinho is coming under increasing scrutiny at Manchester United after overseeing the club's worst start to league campaign in nearly 30 years, but eased speculation over his future with a rousing come-from-behind win against Newcastle before the global break.
Shaw joined United from Southampton in the summer of 2014, and has scored once in nine appearances this season.
The Mirror reports that players believe that their treatment has been excessive and unwarranted, and claims that those still at the club are sending videos of the former players making important clangers in their time at United.
'We are talking about a coach that has won everything, everywhere, so I think you have to respect him. "It is a relation with personality, it is a relation to trust, it is a relation to class".
Six months on from that jibe, a persistent Shaw commended Mourinho for helping him enjoy an improved start in 2018-19 and was told he was once again resembling a "proper football player". "It is extraordinary for him".