I'll be amazed if Mourinho is in charge by the time the United game rolls around in February.
How far are Madrid behind Barca now? If they drop to embarrassingly levels then I imagine Perez will wield the axe, if this guy axed Del Bosque so soon after winning the CL (or was it the league?) then I can't imagine he'll waste time with a guy who sadly seems to have tarnished Madrid's image also. Who knows, maybe a new face might unite the squad and help them in February's leg and further on.
He seems keen to just go out with a bang - busts up with his players, journalists and am sure Perez is crying into his coffee as to why he appointed him in the first place.