Chelsea have agreed a fee in principle for Atletico Madrid forward Joao Felix, with Conor Gallagher moving in the other direction as part of the deal.
The fee for the 24-year-old Portugal international is undisclosed, but it will allow him to return to Stamford Bridge on a six-year deal with an option for a further season.
Felix’s move, which is subject to a medical, will bring him back after a 2023 loan spell at Chelsea.
He scored four goals in 20 appearances in his previous spell in west London.
England midfielder Gallagher, meanwhile, is set to sign a five-year deal with Atletico .
He had been training alone at the club’s Cobham training ground after being left in limbo for a week.
The collapse of Chelsea’s talks to sign striker Samu Omorodion had delayed Gallagher’s £33m move to Madrid, with Atleti needing to raise funds to complete the move by making a major first-team sale.
Felix’s move to Chelsea will pave the way for Gallagher to sign on at Wanda Metropolitano Stadium, where he was pictured at nine days ago in anticipation of a move before a delay forced him to fly back to London last Tuesday.