Number of appearances isn't really the right metric to gauge development, particularly when that number is really quite high. Rashford played a lot up to the end of the year, probably a bit too much really. Yes, he's had less opportunities in recent weeks but perhaps his form was such that he needed a bit of a rest. He comes back into the starting lineup and look what happens - that's an endorsement of his time out, not a reason to criticise. I'd suggest he'll develop a lot more by learning from players like Sanchez than he will have done by being played every week, irrespective of form. I do agree, however, that we need to continue to develop him. That'll be happening away from competitive games as well.