So he goes tonight, off day tomorrow. Do you have him go on normal rest, meaning he would pitch Monday and a week from Saturday? He would then be set up to pitch games 1 and 5 of the ALDS.
Or do you keep the rotation intact, meaning he pitches Tuesday and then is set up if there's a meaningful game on Sunday, Oct 1. If he goes on the 1st for more than a couple innings, he probably is only available for Game 2 of the ALDS (ALDS starts on the 5th).