Varejao would be an amazing fit for the Spurs..
He's one of the best defenders in the NBA, and more importantly, he would fill a need defensively..while a lot of people here seem to want big C/shot blockers, there's a good chance that a guy like that wouldn't fit..Duncan isn't mobile enough to guard PFs anymore, he primarily guards C and the rim..the Spurs need a big man that can defend the pick and roll and defend mobile big men in the 15-foot area to the rim..
Varejao is very mobile, he would add some speed to the frontcourt..he also brings a lot of energy, which the Spurs lack..offensively, he's one of the best big men at slashing to the basket, which would obviously be useful on a team with passers like Parker and Ginobili..
Having Splitter is nice, but Varejao is obviously more established..what's wrong with having depth?..his contract would be the only issue..if the Cavs wanted Blair, it's a no-brainer..McDyess as well..the financial part would be the only question..