United were beaten 2-0 at Old Trafford and only had one shot on target throughout the whole game.
It continues a poor run of form for the Red Devils, who are now three points off of the Premier League top four.
There has been plenty of criticism over the character of the Manchester United players, with many saying the squad aren’t working hard enough.
And Rashford has admitted that the mentality and willingness aren’t what they should be.
But United fans will be pleased to hear Rashford’s honesty as he joined boss Ole Gunnar Solskjaer in fronting up to the problems.
“Today we didn’t play like Manchester United,” Rashford told Sky Sports. “It’s not right.
“The bare minimum is to work hard and give all for the badge, the supporters, the club and yourself.
“It has been a tough road to get to where we are, to get there and not be putting up the same performances as we were in January is disappointing.
“We know what’s been going wrong, it’s mentality and willingness to run for your team.
“Forget the league and top four, you don’t lose this game. It’s that simple as a Manchester United fan.
“We never call each other out but we have to be real with each other. It’s a matter of trying to improve each other.
“It’s more getting back used to doing it on the pitch. They [the supporters] know we can do it.
“Forget the top four and the Champions League. We have to get to the bottom of it and start playing like Manchester United for ourselves.”
Ole Gunnar Solskjaer himself was pleased to see a reaction after a 4-0 defeat to Everton at the weekend.
The Norwegian said: “We got a reaction and in the end we were beaten by a better team.
“But we got a reaction from fans and players and had a go. You can see the work-rate was there, it wasn’t good enough.
“There is a difference in quality. That is why they are top and we are where we are. They [City] have set the standard.
“Living in Manchester we cannot be happy with that. It is up to us to close that gap and overtake them.
“Today you can’t say that any of them didn’t run. You could see clearly an intent and focus. We just need to keep working on it.”
