Well, I'd imagine we'd also have finished 6th or 7th at best if Hazard had played the minutes we've had from Nkunku this season. and Kante had been missing as well.
As it was, the 6000+ minutes they played between them was probably quite useful, particularly for a manager renowned for his lack of rotation of his first XI
Not to mention the 2874 minutes from Rudiger, the 3240 from Kepa, and the 1745 from Kovacic.
I know Kepa wasn't great in his first season, but his save stats etc were still significantly better than Petrovic has managed this season. If Sarri had had Caballero in goal all season, plus his first choice defence all missing (like Poch has had), I very much doubt we'd have had the 3rd best defensive record in the PL.