There is very obviously something there. Him and Onuachu are in the unenviable position of trying to perform whilst gelling and adapting in an underperforming side in a much more difficult league than they've ever played before.
I think Sulemana specifically is suffering right now from wanting to prove himself so much that his first, second and third options are always to try and get a shot away before he even thinks about a pass. His left footed crossing is also terrible, i'd stick him out on the right.
I hope we keep him if we go down as I think he'll come good for us in the end, and I think he'd absolutely destroy the championship.