I see arguments both ways. Early issues with injury at Lille delayed his development and then he was unlucky to spend a few years on relegation teams where he could never really shine. He has twice been loaned out and subsequently had an option to buy exercised, which might say he has good character or might mean nothing at all. He has a strong goalscoring record for Stuttgart, but wasn't as impressive for Rennes the couple of seasons before that.

His numbers are definitely inflated by the first seven games of the season where two hat tricks brought him to 13 goals in seven games.

I'd say it's not very likely that he will get better, but from the small batch of goal highlights I've seen it seems like he could be a great option at his price purely for his ability to score the "easy" goals that our players seem to be allergic to. In saying that, a lot of his opportunities seem to be one on one with the keeper after breaking the line and that's probably not a great fit for us stylistically, with the amount of the ball we have