Foster would be the 3rd big in our rotation. he would be a nice compliment to Tim and Dice, so he would also be part of the PO rotation. he is 32, no reason to assume he will slow down significantly over the next two seasons.
on the other hand: Ratliff averaged 24 games per season over the last 3 years. so what role are you thinking he will take you think Foster also would get??? maybe you are the one thinking about the wrong age of a player.
and btw. Ratliff and Foster are not similar players, not at all and even less at this point of their careers. so, whatever role you were thinking Ratliff will play, it will be different to what Foster would play.
so, no different opinion to 2 months ago: if Spurs can get Foster for just expiring contracts (Matt+Fin) it would be a steal.(why should the Pacers do it?). and yes, I would give the 2011 1st rounder if necessary. 2010 can't be traded anyhow and gives another chance for a young player, Spurs also have a good chance to also add Splitter 2010.
Hill, Blair, Splitter, 2010 1st rounder, maybe Hairston, Williams, maybe even De Colo......that's quite a deep pool of young players, who also need to be integrated.
I don't think Spurs can't afford to trade the 2011 1st round pick.