Ruben Amorim has insisted that he will not 'have the time' that Mikel Arteta was given to turn his struggles around.
Amorim's Man United side will host Arsenal in a crucial Premier League clash on Sunday as the Gunners look to maintain their title push.
United, meanwhile, are hoping to turn their fortunes around, having failed to win in their previous four matches under the Portuguese boss.
Ahead of the clash at Old Trafford, Amorim compared the similar difficulties that he is currently facing and that which Arteta conquered during his time at Arsenal.