I don't see how it possibly hurts. $3.5M for 1 year? If he comes in with a me first attitude and won't listen, cut the bastard and move on. It's not like we have $60M invested in him.
As far as the young guys go, my philosophy is this. If you want to make it in the league as a top tier franchise player, then step the <17> up and do it. If you play with energy, develop a way to consistently score, and hold your own on defense, the minutes will come. If Gay, Mayo, or Conley don't develop this year, it isn't going to be because of AI. It will be their own faults for accepting a back seat while pouting.
That said, I'm hoping none of this happens and the result is just a fun season with better crowds. I enjoyed the years of free tickets, but I guess I'll pay for a few if it means 18K people instead of being able to hear the coaches from the terrace.