The 53-year-old singled out Shaw’s failure to track Daryl Janmaat, which led to Watford’s winning goal, as the central cause behind Man United’s defeat.
United’s players were reportedly ‘shocked’ by Mourinho’s treatment of Shaw – who had been excellent all game – in the aftermath.
Keown was quick to criticise the Portuguese’s arbitrary lambasting of Shaw.
“At 21, Shaw is an easy target for Mourinho and would have been humiliated at being substituted immediately after the goal.
“He has the potential to be one of the finest left backs this country has ever produced, but he’s playing with no confidence.
“His main strength is to tear forward at any opportunity, but it looks as though Mourinho has him playing in a straight- jacket.”
It is nothing short of startling to see Mourinho ignore so many blatant shortcomings (a poorly conducted game plan, for example, or perhaps a failure to pick a defensive midfielder, or maybe the manifest inadequacies of both Wayne Rooney and Paul Pogba) in favour of chastising Shaw.
Publicly chastising somebody who requires a therapist to deal with the pressures of being a United player is bad enough; but launching criticism towards somebody who performed well, whilst ignoring other glaring faults, is simply deplorable.
The manager needs to put an arm around the shoulder of Shaw, take him to one side, and give constructive advice, rather than outlining his faults in front of millions watching on TV.