Arsenal captain Pierre-Emerick Aubameyang has said he is yet to make a decision on whether to stay at the club and labelled it "the most important" of his career.
Aubameyang's deal at the Emirates is set to expire in June 2021 and sources have told ESPN that Chelsea are interested in signing him this summer.
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Sources also told ESPN that Arsenal have not offered him a contract extension, and Aubameyang confirmed this and said he is still negotiating with the club.
"Recently I haven't received an offer but of course there have been discussions with the club for a few months now," he told Telefoot.
"They know very well why so far nothing has happened. It's them [the club] who have the keys and for them to do their work. Afterwards we will see how things go.
"It is a turning point in my career, and I will be very frank with everyone, it will be of course a very difficult decision to make because I have still not decided.
"It is possibly the most important decision of my career. To be clear, nothing has been decided."
In January, the Gabon international hit out at transfer speculation linking him with a move away from the club in his match programme note before the side's FA Cup third-round win over Leeds United.
Sources have also told ESPN that teammate Alexandre Lacazette is stalling on a new contract at the club given the ongoing uncertainty over Aubameyang's future.
Arsenal return to Premier League action with an away trip to Manchester City on June 18.