I think the Lakers are in a very bad predicament with this trade. He could potentially force the Lakers to get "any" deal for him. Do you really think Kobe wants to play on a Mavs team without Josh Howard? Do you think Kobe wants to play on a Bulls team without Luol Deng? I didn't think so.
Kobe can pretty much force what the Lakers get back in any deal and if the Lakers can't get a deal they like, he can opt out and leave for absolutely nothing. Kobe has all the leverage in the world in a trade like this and thats why teams can put very low-ball offers on the table for Kobe Bryant and should the Lakers get desperate enough, get a potentially very bad deal from their point of view.
I think its very feasible that granted Kobe wants to go to Sacramento that a 1st round pick with Kevin Martin, Francisco Garcia, John Salmons and Kenny Thomas and Mikki Moore gets the deal done.