An agreement has already been reached between Chelsea and Crystal Palace over the move, which represents the final step before it can be formally completed, according to footmercato.net.
The switch will take the form of a paid loan for the 2026-27 season, with no option to buy included in the arrangement. Crystal Palace will cover the 28-year-old's wages for the duration, while Chelsea receive a loan fee.
Palace moved for Disasi as they searched for a replacement following Maxence Lacroix's departure to Chelsea earlier in the window, a switch worth around £52million that left a gap at the heart of Pierre Sage's defence.
Disasi no longer features in Chelsea's plans and will now attempt to rebuild his career in a third consecutive loan spell away from Stamford Bridge, having previously spent time at Aston Villa and West Ham United.
The Frenchman made 17 appearances for West Ham last season as the Hammers were relegated from the Premier League, a campaign that nonetheless did enough to convince Palace of his suitability for the step back up to a club now preparing for their first-ever Europa League campaign. He is contracted to Chelsea until 2029, meaning the west London club retain control over his long-term future regardless of how this season unfolds in south London.
Disasi joined Chelsea from Monaco in 2023 for a reported €45million and made 31 Premier League appearances in his first season at Stamford Bridge, but he has not featured competitively for the club's first team since January 2025. He has instead spent the past 18 months on loan, first at Villa Park in the second half of the 2024-25 campaign and then at West Ham throughout 2025-26.
Should the move to Selhurst Park go through as expected, it will mark his third different loan destination since falling out of favour under Chelsea's revolving door of head coaches, underlining how far his path has strayed from the ambitions that accompanied his original £45million arrival from Ligue 1.
Palace's need for defensive reinforcement comes at a pivotal moment for the club, who are preparing for a first-ever European campaign alongside their domestic commitments. Pierre Sage has been cautious in public when discussing incoming targets, but sources close to the negotiations describe personal terms as already agreed, leaving only a successful medical before Disasi can be registered in time to feature this weekend.