The path between Manchester City and Liverpool has been well trodden in recent years.
The two sides meet on Sunday at the Etihad Stadium, competing at the top end of the Premier League table, with managers who have a different view of how the game should be played.
But there are Clubs with plenty of shared heritage that always adds extra intrigue to proceedings.
In this video, we celebrate some of the players who have worn City blue and the red of Liverpool.
Steve McManaman and Robbie Fowler are two such players, both of whom spent most of their careers at Anfield before passing through Manchester later.
But who else has represented both Clubs? Are there some you wouldn't think of straight away?
Watch the video above to find out a few more.