I wouldn't mind Novak taking Lee's roster spot. We have enough depth that I'd rather have someone with a really narrow role than just another player who's worse than 14 other players on the roster. Obviously there's an issue if he's in your regular rotation, but when he's on the court he's as good of a 3PT weapon as anyone in the league - about a 3PT for every 10 mins played in his career, at 43%. That's Stephen Curry territory, albeit without virtually every other skill...
I look at it this way: he's a veteran, good locker room guy, might help you steal a game somewhere down the line, and a good coach can use a 6'10" deadeye shooter here and there. We play team defense so he's not going to kill your chances for a couple minutes at a time, especially if he's hitting shots or screwing with the opposing defense/spacing.