You mean how we had a bad month where we also had an injury crisis? I'm betting most big teams won't sack someone after that. Chelsea sacked mourinho in December even though they were poor since September. Arsenal haven't sacked Wenger for years worth of poor results. City had a useless season and they still didn't sack pellegrini. No top team in the PL is going to sack a manager due to a bad month. Especially given the circumstances injury wise. And no, that's not lowering our expectation. We make fun of Madrid fans when turn on their own players (like Casillas and even Ronaldo) but there are a lot here who does exactly that.
One bad month of
PSV 0-0
Leicester 1-1
West Ham 0-0
Wolfsburg 2-3
Bournemouth 1-2
Norwich 1-2
Stoke 0-2
Chelsea 0-0
Team vs Norwich
Man Utd: De Gea (6), Jones (6), Smalling (7), Blind (7), Young (5), Carrick (6), Fellaini (5), Depay (5), Mata (6), Martial (7), Rooney (6).
Team vs stoke
De Gea (7), Jones (6), Smalling (6), Blind (4), Young (6), Carrick (6), Herrera (6), Mata (6), Fellaini (5), Depay (4), Martial (5).
Team vs psv
De Gea; Darmian, Smalling, Blind, Rojo; Schneiderlin, Schweingsteiger; Lingard, Rooney, Memphis; Martial
Team vs Wolfsburg
Manchester United: De Gea; Varela, Smalling, Blind, Darmian; Fellaini, Schweinsteiger; Lingard, Mata, Depay; Martial.
I don't think you can blame that month on the injury crisis. Apart from Bournemouth with a makeshift defence I think we had strong teams in most games. All those managers you mention
have actually achieved something at their clubs and bought themselves the time.