Diallo can play in more than one position. He can play on the left and in an AM role as well. We have a very fluid, very interchangeable group of attacking players and in an ideal world Sancho, Rashford, Bruno and Greenwood would be the headliners with Diallo, Elanga, Mejbri, and the like the talented understudies. We have enough first-team talent in Rashford, Cavani, Greenwood, Sancho, Pogba & Bruno that we'd still be capable of fielding a strong attacking line up in the event of an injury crisis.
I'd really like to see the talented kids filling in the rest of the game time, instead of the fringe players like Lingard, Mata, and James. If we can get rid of James and Lingard, which we really should be looking to do, Diallo would be looking at getting plenty of game time. I suspect it won't happen this season though as we seem unable, or unwilling, to move players on