Fancy your/somebody's chances - Idioms by The Free Dictionary
fancy your/somebody's chances
fancy someone's chances
to have confidence in someone's [including one's own] ability to be successful. We all think she will refuse to go out with him, but he certainly fancies his own chances. The other contestants are so talented that I don't fancy his chances at all.
fancy your/somebody’s ˈchances (informal) think, often wrongly, that you will be successful; be confident about what you/somebody can do: He fancies his chances as a racing driver, even though he has hardly ever driven a racing car. ♢ ‘Do you think he’ll win?’ ‘No, I don’t fancy his chances at all.’