SeniorAP is pretty much right.
They sure as heck wont transfer you if they're unhappy with you. They'll make your life hell. If they LIKE YOU and they're just temporarily unhappy with your performance, they'll help you improve. But, if they just plain don't like you and you actually do suck, you're screwed. You've gotta make sure you're actually doing a good job so that if they say you're not, it's clearly a personal issue. Ya know?