Remember, Danny was after Udoka before we tried to sign Reggie in 2007. Bogans and Udoka also would accept a backup role and probably don't get a lot of interest throughout the league right now, so they can be had for the LLE.
Regarding Barnes: I'm pretty unsure if he would pick us over the Magic, Lakers and whatever. It will also take a lot of time for him to decide, and I'm not sure he wants to play in a halfcourt team rather than gunning away shots on fastbreaks. He's probably out of our price range, too, and was a starter in Phoenix and had plenty of 30 minute games and probably isn't ready to go to 15 a night.