Chelsea are seriously considering making Joao Felix's move permanent in the summer.
The Atletico Madrid forward is on loan at the West London club this season.
Felix, who has not been prolific with only two goals in 12 appearances, has impressed with his general play.
Per AS in Spain, the Blues are convinced Felix can be a key part of their forward line for years to come.
They are ready to pay a hefty fee for the 23-year-old, who Atleti signed from Benfica several years ago for £113 million.
Any fee Chelsea pay will have to come close to that mark to make it worthwhile for Atletico to sell.