I think managers have been taken in by his blistering pace. The problem is his brain doesn't seem to think at the same speed. His anticipation and timing seem to be out of kilter. Leipzig management reportedly said he lacked tactical awareness.
Given the lack of forwards which threatens next season, maybe he won't have too much competition up front, but if that fails we'll have to write him off as a loss, and get what we can for him. That was Pulis' blunder, and that from the same manager who didn't rate Serge Gnarbry, now first choice striker for Bayern Munich and the German national team.