SUNDERLAND are in advanced talks to sign Reinildo Mandava on a free transfer.The veteran defender, 31, will leave Atletico Madrid when his contract expires this week and is expected to pen a two-year deal with the Black Cats.Reinildo Mandava is set to join SunderlandGettyA number of Premier League clubs had registered interest in the full-back, with Crystal Palace having also held talks.Fellow promoted side Leeds were also linked, but Sunderland have swooped ahead of both.The Mozambique international joined Atletico from French side Lille in 2022 and has made 103 appearances for Diego Simeone‘s side, scoring twice.Sunderland are set for a busy summer following promotion.Jobe Bellingham and Tom Watson have both been sold for significant fees with a number of new faces expected.Bellingham has already impressed since moving to his brother Jude’s old team, Borussia Dortmund.He scored in the team’s Club World Cup 4-3 victory over Mamelodi Sundowns.Watson was the hero of the play-off final as he scored the 95th-minute winner against Sheffield United to seal Sunderland’s promotion.JOIN SUN VEGAS: GET £50 BONUSThe Black Cats have already agreed a club record £30million deal to sign Habib Diarra from French side Strasbourg.Diarra, 21, scored against Thomas Tuchel‘s England in Senegal‘s shock win this month and will arrive as a direct replacement for Bellingham. The midfielder was another target of Leeds that Sunderland have been able to poach.Last term, he made 30 appearances in Ligue 1, scoring four and assisting five goals.His performances helped the club finish seventh in the top flight of France.TRANSFER NEWS LIVE – KEEP UP WITH ALL THE LATEST FROM A BUSY SUMMER WINDOW