Two things:
Firstly, and most importantly, it will be my lifelong mission to disabuse this forum of the notion that we got two (or actually three) second-rounders for Jordan Crawford. We got zero for him. We got draft picks for taking on Joel Anthony's contract, which saved the Heat $3.8 million in cap room last summer, and about $5.5 million in luxury tax last season. Consider the trade:
We sent Golden State Crawford and Brooks. Golden State sent Miami Toney Douglas (who made $2.2 million less than Anthony) and sent us a smallish amount of cash. So to the team getting Crawford (and Brooks), he/they were worth Toney Douglas and a not very large check by NBA standards. While Douglas did get some decent playing time the last few weeks of the season when D-Wade was resting to be ready for the playoffs, Miami did not give up multiple second-rounders for Douglas. At most they gave up their own 2016 2nd rounder for him, but I frankly think they would have preferred to take back no salary and sign a free-agent version of Toney Douglas for the minimum instead. We got the picks for providing Miami salary relief, plain-and-simple. Crawford was merely an expiring salary that another team was interested enough in to take on so that we could provide Miami that relief. No more, no less.
Back to your main point (and I apologize for the digression, but it is my mission), it does not seem that Van Gundy will give up much of anything for a stopgap point guard. That said, maybe 2-3 second rounders isn't considered much of anything, but all the same I'd be surprised if Ainge, who's shooting for the moon right now, would settle for that, unless he wants Turner off the books next summer.
"We definitely got to get a third point guard, there's no question," said Stan Van Gundy, the team's head coach and President of Basketball Operations. "To go out and get a guy who would be a huge difference maker, you probably have to give up something that would hurt you down the road.
"We're not in panic time here. We're not going to do that and be sitting here in the summer kicking ourselves for trying to do something short-term that would hurt us in the long-term."
http://www.cleveland.com/cavs/index.ssf/2015/01/detorit_pistons_pondering_a_de.html