I'm not following, don't mean to be disrespectful but it seems like you came into this discussion not knowing what its about.Varane is literally injured even now again after playing internationals. Its silly to hope he can stay fit based on what he did in Madrid pre injury.
Im not saying Martinez is a bad transfer, just saying you can't compare so frivolously to other slow CBs for top teams who had their weaknesses catered for much more.
The discussion is all about center back, a position we'll only reinforce after departures to squad players.
And Martinez isn't slow.