He's actually a decent crosser, his ball for Pogba's header at Stamford Bridge last season still sticks out to me. Rashford should go RW for a couple games, see how it goes.I’d prefer Rashford on the right with a roaming role.
He’s always been better shooting with his right across goal to the left also.
Plus being a bit of a kick and run merchant he can head down the line and cross with his right if required.