Jose Mourinho accused the Manchester United players of 'relaxing' and claims their attitude differed to his in the complacent draw against Wolves, who treated the contest like a 'World Cup final'.
United fortuitously led through Fred's 18th-minute finish but Joao Moutinho curled in a deserved equaliser on 53 minutes and Wolves held on for a deserved point at Old Trafford.
Mourinho made four changes to the team which beat Young Boys 3-0 in Bern on Wednesday and there was just one alteration from the previous Premier League win at Watford. The majority of United's starters under-performed and substitute Adama Traore was denied a 91st-minute winner by David de Gea.
"Not a good performance, not a good result," Mourinho said. "A fair result, Wolves, by the way they faced the game deserved because they play like I like to play, which is like the World Cup final, that's the attitude that I like my teams to have every match and we didn't have that. They had, we didn't.
"The attitude made the difference, they were in the game since the first minute, they play every ball, every second in the maximum of their intensity and desire, and we didn't, we start poorly, we start both halves at a low intensity and is difficult to win matches when you are not there."
When it was suggested United players had to learn that every game is important, Mourinho stressed: "Come on, this is something you learn as a kid in the academy. You don't need experiences at the highest level to learn that, that's a basic law of football.
"You have to play to the maximum of your potential, the maximum of your focus, unless you play in such a weak league against really weak opponents and then playing 30 % of potential is enough to win, that's not the case.
"We all know that and poor start and then lucky to score the goal before them and then, winning, we start the second-half again at a low intensity and then we concede the goal and then we react. Obviously we reacted but not creative, sharp enough in the last third, of course we had a couple of chances to score and win the game but not enough."
United were humbled 3-0 by Tottenham in their last home game 26 days earlier yet dominated the first 45 minutes. Mourinho said he was more frustrated by the stalemate with Wolves than the loss to Spurs.
"I expect my team to make a better game than we did, if we play against Wolves like we did against Tottenham," Mourinho added. "I think we win. Looks a contradiction, but I am more disappointed today than I was against Tottenham. Obviously we lost the game but I like very, very much my team's performance.
"And today of course we had a better result, but I didn't like my team. I can't explain a difference of attitude because I never have a difference of attitude. For me, is difficult to explain that.
"We won three matches away, come home with a good spirit, because we recover and then you start in a poor way and I could say tired, Champions League, awful pitch, the body suffer a difficult impact than a match in actual grass, not coming home after the match, I could go in this direction.
"But we have Lingard and Alexis didn't play, Fellaini played 25 minutes, Antonio Valencia didn't play, so we didn't have a team that was in big trouble with accumulation of matches.
"So I think is a mental situation and attitude, again one team was coming to play the game of their lives and another was to relax."