this is just my opinion: i would rather have this trade (but it would be a very long shot)
http://espn.go.com/nba/tradeMachine?tradeId=aavr2p2
Blazers get: Al Jefferson --> the blazers are still on their rebuilding mode, IMO getting AJ would give them same play as LA (post up and mid range shot) but with an expiring contract (they can pursue other bigs at the end of the season) or if AJ would fit in their system they have cap space to give him an extension.
Jazz get: SJax, blair, cojo, bonner --> expiring contract of SJax, blair and a partially guaranteed contract of bonner will give them flexibility at the end of the season to pursue other players. blair and bonner could provide a back up for ernes canter and d. favor, bonner's 3 pt ability would add a 3pt threat and also spread the floor that would lessen the burden for their other bigs to penetrate the paint.
Spurs get: LA --> spurs are pursuing a championship, with LA skill set of post up and midrange jumper both splitter and duncan can play with him and provide additional offense if our SG 3 pts are not falling and parkers penetration is being nullified, and with his athleticism he can provide an additional defense around the rim and rebound (def/off) which is our biggest problem when we are facing the thunders and clippers, and he comes along with a 3 year contract. the only problem is we need to look for a back up SF for kawhi to provide defense on the wings, but diaws ability to switch on different position could give a quick fix and we use baynes as a back up center