They're desperate right now, no doubt. If Mahinmi walks, they'll have Haywood and B.Wright as their "bigs", unless they can source someone else.
I'd like to see them lay down an offer for JaVale McGee, TBH. Dude is exactly what we need, athletic shot-blocking rebounder! If he can continue his 10ppg (last season -> 11.3ppg, 7.8rpg, 2.2bpg) and continue to fill the needs in the middle, he'd be a great asset. I'm sure Carlisle & Co can up his Bball IQ!!!
Besides, if Lopez has dodgey knees, why would the Magic be looking to trade for him? Why not trade him elsewhere for better assets?!?!