A thief attempts to steal something from a tower. A sorceress (who can turn into a cat) drafts him into helping her save the world. He is put to sleep for a couple hundred years. There is a gold cache under a hill that he uses for his party that he travels with.
I'm pulling stuff from the memory of a book I read over 22 years ago, not a recent book. It is a fantasy book. Any help would be appreciated.