Chelsea could pull out of a deal to sign Diego Costa if the Atletico Madrid striker's hamstring injury becomes more severe.
Reports earlier this month suggested that the Blues had provisionally agreed a £32 million deal to bring Costa to the Premier League, but The Daily Star claim that the Spanish international has risked angering his prospective new employers by his attempts to speed his recovery from the blow he sustained during last week's La Liga title-decider against Barcelona at the Nou Camp.
Indeed, the same source further suggests that Chelsea could pull the plug on the transfer altogether if Costa - who will surely be desperate to take the field for Atletico's Champions League final date - makes the injury far worse.
Such a stance could presumably leave Costa with somewhat of a dilemma to tackle. Should he really risk playing in this Saturday's showpiece if it could jeopardise his chances of making the move to Stamford Bridge?
Or would the memory of possibly winning European football's most-prestigious club tournament far outweigh such an obvious risk?
Atletico boss Diego Simeone will surely be hoping that Costa is able to start in Lisbon, with Los Rojiblancos standing on the verge of a truly historic double.
The Spaniards have enjoyed an incredible 2013/14 season to date, triumphing at the final hurdle to lift their first La Liga trophy since 1996.
Chelsea were one of the teams who succumbed to Atletico on their route to the final, with Costa netting from the penalty spot during the second leg of their semi-final tie.
Jose Mourinho is obviously aware of his talents, with Costa clearly earmarked as the ideal signing to revitalise Chelsea's ailing strikeforce.
While the majority of football fans will simply be hoping for an unforgettable and entertaining final, Chelsea supporters will be praying that Costa does not take too much of a risk with his fitness.