Republic of Ireland under-21 international Thomas Butler has signed a new three-year contract with Sunderland.
The 21-year-old has committed himself to the club until 2005.
The midfielder, who made his Premiership debut at Charlton last season, played in the club's pre-season games and was a substitute in last night's 1-1 draw with Royal Antwerp in Belgium.
"I'm glad to get everything sorted out and I'm looking forward to the start of the season," he said. "I got a taste of Premiership football at the end of last season and I'm hoping to impress the manager and try to get into the side".