avery bradley. He's a year older, way more confident, and he doesnt need to be a big playmaker.
Just guarding opposing pgs is more important than passing skills, because there are so many hyper-athletic point guards. Bradley is quite possibly the best defensive pg in the league, and can contain deron w, jwall, the teagues, drose, cpaul, kirving, rwestbrook, jlin, dlillard, tevans, and every other guy you can think of.
Arroyo or jterry of dfisher will get smoke by the young guys on that list.
So you put bradley there and give him help, like terry at the two or pierce at 3 or kg at 4 or even sully at 4 or 5. Cs have quite a few good creators and passers.
Bradley also showed flashes of being a good scoring pg. Hes an elite athlete with a growing bag of tricks.