It's all well and good saying... "sack Amorim," "Amorim must go."
But...
A) the next manager would be United's 5th manager in the last 4 years (not counting Carrick and Van Nistelrooy's short spells)
B) You've already tried the serial winner, the authoritarian, the man that knows the Premier League, the man who knows the club, the pressing man and the next big thing in Europe... twice
Honestly who is your suggestion for who comes in, right now?