And the evidence we have to play with is that, in a far more competitive league than La Liga, we have always finished top 4 till this season when we missed out by 1 point.
So clearly in a duopoly like La Liga it is inconceivable that he would take them over and they would fall out of the top 4.
It's more reasonable to suppose that he wouldn't win them the league, but finish top 4 - of course they would.