As far as i know, he plays mostly as a freerole/SS for us this season?. I really dont see the difference tbh. He can roam all the field , from the mid line to the keepers area, pretty much like he is doing this season. Use Morata as the striker, but that doesnt mean he should stay just there. It would be a dynamic formation, with the 3 forwards having different options and tsking turns going in and out.
Of course, is a vague idea whoch would need some work but is doable.