OKC, apparently, doesn't want to give out deals beyond 2 years in length (ripped from hoophype.com/rumors) because of Durants FA.
If MLE is really in play, Gasol would be the 4th big on a championship team. Duncan at 28 mpg, Splitter at 20 mpg and Diaw at 24 mpg (last year) he could carve out 20-24 minutes a game (not including rest games) Not to mention playing with Duncan, Parker, Ginobili and Diaw would allow him for some of the easy baskets in his career.
Ibaka is going to be around 33 mpg with Adams at 20mpg and Perkins/ Collison 20mpg not to mention OKC going small with KD at the 4. It would probably be less minutes for Paul