It depends mainly on his attitude, if he listens, works hard and stays free of injury he could become a legend at Liverpool. With Shearer retiring from the international scene, he has the chance to make that shirt his own, there are very few powerful English strikers like Heskey, and the likes of Fowler, Owen and Phillips will score more goals playing with someone like Heskey at the international level.
Heskey will be a great provider but I wonder if his goal tally will ever be that good. His flick ons are superb and he is fast, strong, great shot and both footed. I realy like the guy and believe that since he has been here he has been our best player (more so than Hyypia, Owen and Gerrad).