The Daily Mail says Mourinho will raid Roman Abramovich’s treasure chest this summer as he looks to put the finishing touches on his Chelsea grand plan.
The Spain international, who scored a vital penalty in Atletico’s 3-1 Champions League semi-final win on Wednesday, is a long-term target for the Blues.
Contact between both clubs about a summer switch to London for Costa has already taken place.
The Stamford Bridge club are also monitoring Bayern Munich striker Mario Mandzukic’s position.
Robert Lewandowski’s pending move to the Allianz Arena has left Mandzukic’s future uncertain.
Likewise, Chelsea are taking a watching brief on Edinson Cavani’s future at Paris St Germain, while a return for Didier Drogba could provide a romantic solution to Mourinho’s striker dilemma with the striker considering his future at Galatasaray.
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