“Today we were too sloppy, too many passes went astray, the rotation wasn’t there, there were too many things that can go wrong which went wrong for us.
“There is a reason behind big squads in football, you want to perform time and again, but that’s not possible. With the highs of the PSG game, they were okay against Chelsea and then very good against Leipzig.
“Then we were down again today. We need that consistency but it’s down to the amount of players we’ve got and today we didn’t get the response that we hoped for.”
The defeat to Arsenal represented Solskjaer’s 100th match in charge of United and asked if he has made progress during his time at the club: “That’s not my job to say. That’s probably for everyone else to say.
“For me, we just keep on working for the next one. For me it’s a good group, they want to win, they want to go forward, they want to work hard.
“And today was a day that they go home disappointed but I know these boys and they’ll get back at it again.”
Former United midfielder Roy Keane, speaking on Sky Sports post-match, was heavily critical of the Red Devils’ squad.
He said: “I am really, really worried about Manchester United now. Where do you want me to start? A lack of energy, of enthusiasm, and a real lack of quality. That really concerned me. No quality, no composure.