I'd hope that him playing for 30+ mins (at his best) would be better than 90 mins.No KDB in the derby? Lol
If played as a forward (as he has a bit recently), I'd prefer the energy of Alvarez to start the game.
If played as a midfielder, I'd prefer Bernardo again for his energy.
But I'd be shocked if Pep didn't start him. If he does, I hope Alvarez and Bernardo also start (so Foden or Mahrez would be the ones to drop out).