CHELSEA have 24 hours to meet Sergio Aguero's �50million get-out clause at Atletico Madrid. (The Sun)The Argie star is set to face Panathinaikos in tomorrow's Champions League qualifier unless the Blues increase their �42m bid.

CHELSEA have 24 hours to meet Sergio Aguero's �50million get-out clause at Atletico Madrid. (The Sun)

The Argie star is set to face Panathinaikos in tomorrow's Champions League qualifier unless the Blues increase their �42m bid.

If Aguero plays, he will be cup-tied for Chelsea's own European campaign this season - scuppering the deal.

Atletico insist they do not want to let the striker go.

And the Spanish club fear a backlash from their fans if they sell Aguero, 21, so close to the start of the season.

Missing out on anothermajor summer target would be a huge blow for Chelsea manager Carlo Ancelotti.

He was pipped by Real Madrid in the race to sign Kaka. And the Blues' bid to land Bayern Munich ace Franck Ribery has also hit the buffers.