I understand wanting to keep Splitter in the fold if you are projecting pairing him next to Aldridge. I mean that's a pretty complimentary front court with those two guys playing next to eachother but keeping Tiago long-term and planning on replacing Tim with some mid tier PF to pair next to Splitter doesn't sound to promising long-term.
There's certainly might be a scenario in which maybe the Spurs can try to get Aldrige/Afflalo? from Portland in a deal which involves Green/Fillers/Picks or something like that. Seems lopsided at the moment but there are other scenarios in which something like that could happen and allow the Spurs to keep a frontcourt of Aldirdge/Splitter once Duncan retires.
There's certainly might be a scenario in which maybe the Spurs can try to get Aldrige/Afflalo? from Portland in a deal which involves Green/Fillers/Picks or something like that. Seems lopsided at the moment but there are other scenarios in which something like that could happen and allow the Spurs to keep a frontcourt of Aldirdge/Splitter once Duncan retires.