We could rotate but I want straight up rest for players like messi, iniesta, busquets over those copa games. madrid used to rest CR7 and modric for entire games (even in liga) during the business end of last season. If the other players like paco deulo and co manage to win the copa, then it would be an added bonus. But I want the CL and liga to be our sole focus.
EDIT: Lucho was chasing a back to back treble in 15/16 and played MSN in ALL of the copa games which led to the disaster in april where the team flat out hit the wall.