Manchester United know from experience that, around this time of year, getting on the wrong side of Jose Mourinho can be like poking a bear with a stick. The preening Portuguese barely wasted an opportunity to tell anyone who would listen just how unhappy he was with the Red Devils’ transfer market activity during a rather tense pre-season back in 2018. “One thing is what I would like. Another thing is what is going to happen,” Mourinho said at the time, per Sky Sports, not the first and not the last Manchester United manager to be left frustrated by the Glazer’s infamously snail-pace approach…