Winger Rees Greenwood has left Sunderland by mutual consent, the club has announced.
The 21-year-old winger has been at Sunderland since the age of eight and progressed through the academy set-up into the Under-23 squad.
Greenwood, who has represented the club at every age group, has been a regular for the Under-23s but has struggled to make an impact at first team level.
He has made one start for the first team, in Sam Allardyce's final game in charge in the 2-2 draw with Watford two years ago.
In February 2016, Greenwood's impressive performances led to him scooping the Premier League 2 Player of the Month award and he also earned international recognition, featuring for England's Under-20 side.
A Sunderland statement read: "Everyone at the club would like to wish him well for his future."