I only think he would come back for a big money fight. It's a long shot, but I could see it happening if Jermain Taylor or Carl Froch won the Super Six. Carl Froch v. Joe Calzaghe for British supremacy would be huge in Britain (I think at least). Jermain Taylor already has a big name and a fight with Calzaghe would bring a lot of cash to the table in the US and Britain.