United manager Mourinho had become increasingly angered with sections of the media in recent weeks at coverage of his team’s campaign.
With Wednesday’s Europa League Final to come, against Ajax in Stockholm, Mourinho could still end his first season at Old Trafford with two major pieces of silverware after collecting the League Cup.
But United’s struggles in the league, and some tedious games particularly at Old Trafford, have seen a growing mood of disquiet, certainly among sections of the written and broadcast press.
Following the Palace win, United players performed a lap of appreciation for supporters with club captain Wayne Rooney having played what could prove to be his last game for the club, picked out for a special ovation by Old Trafford fans.
But while the celebrations were on-going, Mourinho made his way to a variety of press conferences for television, print and radio media, staying a matter of seconds in each case before leaving due to the absence of journalists.
Even MUTV, the most friendly of broadcasters in dealing with the club, was not immune from Mourinho’s policy as he snapped: “I’m in a final, let me go home, I’m in a final.”
Mourinho was reported to have left Old Trafford by 1610GMT, within 20 minutes of the final whistle.
An insight into Mourinho’s mindset could be gleaned from his programme notes before the game when he responded to former Liverpool manager and current critic Graeme Souness who had questioned why the United manager has frequently used the excuse of fatigue for their late season problems.
“I have seen in the football media that certain pundits cannot understand why our players are tired,” wrote Mourinho.
“A pundit is not honest if they cannot forget their colours or if they try to hide the truth from their audience.
“It’s not my fault if their managerial career was very poor.”