If he plays the ball towards the opposition goal and runs around a bit he'll be an upgrade on Theo.
What we really need is a manager that can take advantage of having Ozil, Mkhitaryan, Lacazette and potentially Aubameyang on the same pitch. Under any normal circumstances that should be quite exciting, especially if you put Jack in behind them and install a bit of discipline into players like Ramsey and Xhaka.
We have Wenger.