I believe the Glazer's know full well they fucked up appointing the Rentboy, but thankfully they are stuck with him for the foreseeable future. It would be expensive and it would be a monumental PR disaster for the club.
Their turnover of managers since that toxic, malodorous, deformed lump of solidified warthog urine left the swamp has proved the club has been in terminal decline for far longer than anyone thought. The toxic-tyrant ran that club into the ground In order to preserve his status, and now, five years on, after Gollum, Louis, Peggy and the Rentboy collectively have spent billions trying to make the club stay relevant, they are hurtling downwards faster than Ashley Young in the opponent's penalty area.
Despite their wealth and the 'favours' afforded them by pigmol, they are in a very dangerous position - failure to qualify for CL football again would be absolutely catastrophic.