That's some about turn from Koeman. Maybe he's been leaned on from above and told to integrate him into the squad. Clearly he doesn't have to play him but at the very least he might be a useful body on the bench in a tough and busy few upcoming months.
I think it's just the fact Koeman is a massive pragmatist.
He said last year they got all the forward options they targeted so he was not needed.
This year we didn't get all our striking targets and he is a striker at the club so will be brought into the fold.
If he is shit in training he wont make the matchday squad. Simple as that.