The Wander thing kept happening in my 20 until I moved a couple of their other SS's...My understanding is that it's just the (poor) CPU AI trying to balance rosters. Atlanta was doing the same thing with Waters because they had an overabundance of CF's. A number of other teams with deep prospect pools at certain positions seem to do it as well, unfortunately. Unfortunate to hear that it still happens in 21, but I suppose it makes a weird sort of sense given that the game is likely only tested with default rosters.