I mean, backup center is replaceable position for sure... for most teams. Back up center at the level Favors is playing is NOT replaceable. People don't seem to grasp just how good Favors played at center last year. Per 36 minutes at center(minutes without Rudy on the floor) he averaged something like 22/14/2 with 2.5 blocks and 1.2 steals at 67% TS... oh and BTW... the team defense GOT BETTER with him on the floor than it was with Rudy. Yeah. This is not a thing most teams can do - have their 2-times DPOY sit on the bench for a break and have their defense IMPROVE... Favors is around top 10-12 center in the league right now when healthy. He just happens to play on the same team with a top 5 center. This is not easily replaceable. His PF minutes are much more easily replaceable(because of bad fit with Gobert) than his center minutes.