That would, however, mean that Lukaku was often sticking to his position and holding the ball up.
United, however, now have different ideas.
Rashford has flourished under the new system and, for now, the No 9 role appears his to lose.
But Lukaku’s improved displays suggest he, too, has bought into Solskjaer’s tactics.
Meanwhile, Gary Neville has praised Rashford – believing him to be a better fit than Lukaku for the time being.