Sir Alex Ferguson feels Wes Brown is being 'passed into good hands' after the defender joined Sunderland from Manchester United.
Brown has brought down the curtain on a 15-year career at Old Trafford by signing a four-year contract to move to the Stadium of Light for an undisclosed fee.
The former England international made over 360 appearances for United, but has struggled to command a regular role over the past couple of seasons.
Ferguson paid tribute to the 31-year-old for his part in the club's recent success and feels he can make an impact under former United captain Steve Bruce at Sunderland.
"Wes has been a great asset to the club during the most successful period in its history," Ferguson told the club's official website.
"He was a product of the youth system and marked himself out from an early age as one of his generation's most natural defenders.
"In his time with us, he certainly became a favourite with the fans for his no-nonsense approach to the game and his infectious personality.
"It's always the hardest of decisions to let loyal servants go. But life moves on and, unquestionably, Wes will get the chance to make a real contribution to Steve Bruce's Sunderland and I'm delighted to be passing him into such good hands.
"Everyone connected with United wishes him a long and happy stay at Sunderland."