Like most here, I would love to keep Giles, but according to all rumors, he's gone. But, then again, what are rumors?
OTOH, I definitely wouldn't let Renteria go. He's signed and we know what the cost is and we are set at SS for a few years. If we trade Renteria to keep Giles, we may very well have neither if we can't sign Giles, which is at least iffy.
No way do I want to lose Renteria.