Reus was a beast playing up front for Gladbach. He is more than capable of playing all front 4 roles and that is why I expect if he is one the market that Wenger will make a serious move for him.
Reus will move for a serious wage and for a team looking to challenge for the CL and domestic title each year. We need to put something together this year to convince him that arsenal isn't a sidestep in the same way we are calling athletico a sideways move.