Chelsea are struggling to persuade Atletico Madrid to sell forward Antoine Griezmann in the summer transfer window.
The French international has had a superb season and managed 22 league goals in 37 appearances - although his efforts were in vain as Diego Simeone's side relinquished their title to rivals Barcelona.
There has been plenty of speculation about the former Real Sociedad man in recent weeks, with Chelsea and Bayern Munich both said to be interested in signing him this summer. According to Spanish newspaper AS, Blues boss Jose Mourinho is a big fan and believes the 24-year-old would improve his squad next season.
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Chelsea have the financial muscle and would be willing to double Griezmann's wages in order to persuade him to move to Stamford Bridge. Bayern Munich meanwhile are also in the hunt for Griezmann, who has a €65 million release clause written into his contract, and have scouted him this season - however AS say that a deal this summer will be difficult to complete.
The Spanish club do not want to lose him and intend to build their team around him in the future - so won't be selling up at any price.
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Previous reports have suggested that Atletico Madrid will move to counteract any interest from Chelsea and Bayern Munich by offering Griezmann a new contract, while they will do the same for Koke, who has also been linked with the Blues. According to the Telegraph both new deals will have release clauses worth £100 million inserted into them.
Chelsea won't be resting on their laurels after securing their first league crown since 2010 this season and have already been linked with a host of top players in order to improve their squad after exiting the Champions League at the last 16 this term.
Paul Pogba, Raphael Varane and Raheem Sterling have all been linked with a move to Chelsea and regardless of who is playing under Mourinho next season the Special One is already predicting a tough title defence.
"We have to be better if we want to be successful again. The other opponents are not going to accept this without a fight," he told Chelsea TV.
"Next year will be more difficult, but because it's difficult is one of the reasons why I came back to England. I will enjoy it again."
Chelsea already have an embarrassment of riches in their attacking unit - however Oscar, Willian and Juan Cuadrado haven't exactly set the world alight.
Griezmann is more direct and more of a goal threat that all three of those and given Chelsea's striker troubles this term that could be a huge bonus.