Former Aston Villa and Celtic boss takes over at the Stadium of Light.
Martin O’Neill has agreed to succeed Steve Bruce as Sunderland manager, BBC Sport understands.
O’Neill, whose last managerial job was with Aston Villa, has been regularly tipped for vacant posts at high-profile teams in the last 12 months and was the bookmakers’ favourite.
The Black Cats are 16th, two points above the relegation zone, which led to Bruce’s sacking on Wednesday.
The team has won only two of their 13 league games this season.
O’Neill, 59, a former Nottingham Forest player, built his managerial reputation at Wycombe Wanderers before successful spells at Leicester City and Celtic.
He joined Villa in 2006 and led them to three straight sixth-placed finishes in the Premier League and the Carling Cup final before resigning before the start of the 2010-11 season.
SOURCE: BBC Sport
59 year old Martin O’Neill has been out of the game since August 2010 and has been linked with just about every vacant post in England since but now appears ready to get back into the game by agreeing a deal to take over as Black Cats boss.
Steve Bruce was axed earlier in the week after a poor start to the campaign and though Mark Hughes was reportedly also considered to fill the post, owner Ellis Short has opted for the former Wycombe Wanderers, Leicester City, Celtic and Aston Villa man to take over from the former Man United man.