To be honest I really like him on the right and it's a breath of fresh air. Was calling for it for a while too. He's been a bit hit and miss at times there, sure, but it makes sense for a lot of reasons.
- Cavani is clearly our best striker with the natural movement, aerial threat and experience, and we're at our best in a 4-3-3/4-2-3-1. Bruno is best as a #10. Martial can play either as a 9, or on the left, so if Cavani is in, Martial is worth playing on the left (would be a lot better if he was actually in form)
- Also allows us to use Pogba on the left wing if we don't want Martial there, while keeping our best hard working midfield trio in Bruno/Fred/McTominay
- On the right, we have literally nobody. Mata who can't really do it in the premier league much anymore can play the role, Dan James can play as a right winger but he's nowhere near the required level, and then Greenwood who is a 19 year old out of form striker playing out of position on the right.
- If Rashford doesn't play on the right wing, Wan Bissaka is tasked with handling the entire right wing. He can't do that. It's a really tough job, and he's not good enough going forward to handle the entire flank. Plus it then hurts him defensively as he gets out-numbered out there.
- Rashford playing on the right has improved Wan Bissaka loads, at both ends of the pitch. He's not getting doubled up on (as then Rashford will stretch the pitch and counter attack into the space), and going forward he is now an overlapping threat, not the entire threat.
- To add, Rashford is quite a good crosser of the ball and is capable of whipping it in from deep as well to pick out the runners on the other side.
- Probably the biggest point - so much of our build up now goes through the right but is also balanced on the left with Martial still more than capable out there (along with Shaw). It's a much better balanced team as we can build up the play on both sides (stretching the pitch, giving more space in the middle), with both full backs being used properly so it adds a lot more to us. It's no wonder we've become a lot more consistent at actually getting the results now, compared to the flawed team we had before.
No, it might not be Rashfords best position (though I think he has huge potential there and is far more unpredictable on the right). But our alternate options on the left are Martial and Pogba, while our alternate options on the right are Mata/Dan James/Greenwood. It's a world of difference there. It also brings a better level out of the rest, as first it stretches the pitch to open up space for Bruno or Pogba in the middle, while greatly helping out Wan Bissaka (and Shaw staying the same tactically, individually he's just been better for unrelated reasons IMO).