I think he played well this year and I think his ability to grab rebounds and rack up assists is totally underrated on in this forum. Unfortunately, I don't see much of a future for him on this team. He is your typical jack of all trades type of player, which is great off the bench, but I am not sure he is ready to accept that role yet - especially on a rebuilding team.
If we can't keep Crowder, but we upgrade greatly this year and Turner buys into the whole system, then he may be a keeper; otherwise, he may be moving on to greener pastures.
As for the Jordan Crawford reference, he was offered an NBA contract this year, he just chose more money in China. I imagine he will be back.