From the video (yes just the video and other clips) it seems as if he has a really good first touch and pass movement. (justarsenal.com)
By that I mean good first touch and the ability to move on tight spaces since the midfield is the most clustered part on the pitch so no Kolasinac does not fit those criteria to play in midfield. (justarsenal.com)
@Twig I don't see him doing a Sturridge cause as a fellow footballer i know from experience that you need to have a very good first touch and ball control to be a top striker and Welbeck has neither. (justarsenal.com)