What if Chelsea doesn't let Hazard leave?

Reports and articles have been coming out for months regarding Hazard's all but confirmed signing to Real Madrid. 

 Even 'L'Équipe' assured that the transfer will be official after the final of the Europa League and that Madrid will pay Chelsea around 100 million.

However, neither 'The Sun' nor Hazard himself, who is using the same strategy he used to leave Lille, know exactly what is happenign regarding the transfer ban. Indeed, the Belgian fears that Chelsea may close their doors this summer.

The English club will not be able to sign any players in the next two markets, so it could lead to the forced continuity of the '10', although they could force the transfer through a transfer request. 

The player already implied his farewell in the last duel at Stamford Bridge and even Maurizio Sarri spoke of him in the past, urging the club to accept the decision of its big star.

According to 'The Sun', if Chelsea keeps him for another year the profit would be virtually unexistent, as the Belgian striker concludes his contract with the English discipline on 30 June 2020.