I really don't see that a Vardy/Slimani partnership is ever going to work, much as BN suggsted. I can't see that it was ever the intention either. I'd go so far as to say that I think it weakens the team.
That they are totally different types of player is not a problem in itself, it's that the specifics of the differences make them incompatible, imho. You need a more flexible team shape than we have (and the players capable of doing it) It might have been something that Ranieri was aiming for but I think we've seen that door nailed shut, at least in the foreseeable. Further, we're shaped (for better or worse) to have Vardy up front - and have been for some time.
It pains me to say that I think Slimani will go. I don't think we're ready for him yet and I'm pretty sure he's not going to want to sit on the bench and wait.