Khazri first joined the Black Cats when they were a Premier League side back in January 2016. Now the club are preparing for life in League One, following two successive relegations, and new boss Jack Ross was never going to realistically be able to keep hold of the Tunisian international.
The sale of Khazri, in financial terms, is likely to be the most substantial of the summer for Sunderland. Now the club have the opportunity to invest those funds wisely.
Ross will be eager to build a squad capable of making an immediate return to the Championship, and will need to use this money well to ensure that that happens.