Learning where to run and reading the ball flight are the two biggest learning curves for McK. Footballs fly through the air a lot differently to gaelic / soccer balls. Marking - maintaining body contact/position on your opponent and still being in the right spot to take the grab - has probably been the hardest thing for McKenna’s to get his head around.
Get him on the wing where there’s less contested marking/body positioning in packs req and he will run riot. Colyer, based on his '17 form, might be the one to make room if he doesn’t improve in 18