Marko Marin has admitted that he is 'unsure' where he will play his football next season.
It is understood that Sevilla want to extend the deal for another season, but Marin has hinted at a return to Stamford Bridge.
"My future is still undecided. We'll sit down after the season and talk about my situation," he told DPA.
"Sevilla wants me to stay here, but there are signs from England that they want me back. I'm flattered and proud that they want me to stay here.
"The fans are quickly earn the hearts of the players."
Marin joined Chelsea from Werder Bremen in 2012.