Emerson has a year left on his Chelsea contract and is keen to move on from the club this summer in order to play more football.
A move back to Italy has been speculated for several months and Napoli are interested in bringing the former Roma man back to Italy.
But Lyon have got their noses ahead in the race to sign Emerson and are in talks with Chelsea to sign him.
The Ligue 1 giants are pushing to get their hands on the Italy international, but Emerson has asked for more time to take a call on his future.
A move to Lyon is an option for him but the left-back is more interested in joining Napoli.
Napoli coach Luciano Spalletti has spoken to him and Emerson wants to work with the experienced Italian.
He is waiting to see whether Napoli would be prepared to put in a concrete offer to sign him.
Chelsea want to sort out his future soon but for the moment Emerson has taken a pause as he reflects on his future.
