There is a perceived view that Vrancic doesn’t/can’t do the defensive side of the game. I can understand that view as last season he did sometimes get completely bypassed in midfield, but I felt that was more due to adapting to the speed of the game rather than his skill set.
Vrancic is good enough to play in pretty much any Championship team (style dependent) but he is in some way unfortunate that Leitner is also at the club and is one of the best midfielders in the league (ironically Leitner’s emergence at Dortmund one was of the reasons that Vrancic never progressed there).
As for Cantwell, he is easily good enough to get regular minutes for anyone in the Championship. He has been better on the wing and like most young players he needs regular rotation to allow him to rest and reflect (the fact Aarons hasn’t needed this is part of the reason he is exceptional). Cantwell isn’t going to burn past players like Hernandez but he is good at moving infield and creating overloads. Stipermann often pushes forward, in advance of Pukki, so leaves a space for Cantwell and Buendia to move into. This movement, which pulls the opposing full backs with them, has been key to getting Lewis and Aarons into space in advanced positions.