It doesn't take much to stoke the engines of Gary Sheffield's temper, especially lately. The right fielder is stewing about having to wait for the Yankees to pick up his $13 million option for 2007, which is reason enough for those RPMs to run near the red line. Sheffield says the Yankees are making a mistake auditioning him. If they need a few months, or even weeks to see if his bat is still quick, the slugger is ready with a countermove. Actually, it's a thinly veiled threat: wait too long, and he's moving on. "If my body feels good I'm playing somewhere, here or somewhere else," Sheffield said. "Either way I'll get my 500 home runs. It's no sweat off my back where it happens." The Yankees think Sheffield will calm down soon enough. The money is coming, they say, even if it takes a month or two.