An eye-watering 11 points off the Champions League spots when Jose Mourinho was sacked, caretaker manager Ole Gunnar Solskjaer's stunning start to life at the helm has seen them claw back that gap in style.
United's run of form has seen them be unbeaten in 11 games in all, with two wins coming in the FA Cup, only failing to beat Burnley but even that game didn't halt their momentum as they came from 2-0 down to draw 2-2 in a result that must have felt nearly like a win.
And Solskjaer - contracted until the end of the season - believes Rashford is United's answer to PSG's 20-year-old World Cup victor Mbappe.
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Solskjaer says he spoke to co-owner Avram Glazer after the match when the American visited the United dressing room, but he insists the team's improvement is not simply down to his impact.
"We are trying to put the team forward to put players in positions where they can hurt teams". We've talked about this - how we wanted to be in the top four and although there is still a long way to go, we are there and we want to stay there. I remember Cristiano Ronaldo scoring a goal over the far side some years ago that wasn't too dissimilar - this is equally as brilliant. We have to carry on playing like that and getting positive results.
While United's supporters revelled in watching the legendary figure in the dugout mastermind another victory, Fulham's fans booed Claudio Ranieri down the tunnel after the final whistle.
United were eighth at the time and Mourinho had said: "I know it's a big gap but I also know until the end of December if I'm not wrong we have eight Premier League matches to play, and with eight Premier League matches we are speaking about 24 points". It is always good [to win], but we have big teams [to play] now. "We could have had four or five goals, it was different to what we did against Leicester so another step in the right direction".