Toronto ,maybe, is another team that could be interested in him. They don't love/ trust Valanciunas and they were really bad defensively this season. They have two 1st rounders next season, one from the Knicks.
I hadn't considered Milwaukee. Miles Plumlee, Damien Inglis, and lottery protected 2016 1st round pick (probably in the 15-18 range) for Splitter, is a pretty good haul if the Spurs are looking to "dump" his deal if the Spurs can land Aldridge.
Inglis was the 31st pick last season and is an intriguing, young, prospect on a dirt cheap 4 year rookie deal ($885,000 next season). [
http://www.draftexpress.com/profile/...-Inglis-6428/]
Its hard to gauge Diaws value. He has a rep. for checking out if the situation isn't to his liking. His contact is far from bad something like $15 million guaranteed over the next two seasons but Splitter is probably the easier of the two to be traded.
He is an above average big, elite defensively (when healthy) and is only 30 years old on a descending contract that only pays $8.5 million next off season where the cap jumps to almost $90 million.
Both would be good fits in Atlanta. I feel that Splitter makes more sense for that team though, but Bud does seem to favor bigs that can shoot. The Spurs couldn't actually make that trade until July, 1st because the Hawks are at the salary cap line.