Blues manager Jose Mourinho insisted earlier in March that the 24-year-old does have a future at Stamford Bridge despite only making 28 league appearances for the club in eight seasons and spending the majority of his time out on loan.
Bertrand, who is currently on loan at Aston Villa, is keen to play regular first-team football and says that he could yet stay with Paul Lambert's side.
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"Come the summer I need to be the No.1 left-back, wherever that will be.
"I have ambitions but I have to be realistic as well. I will sit down and consider all my options. Staying here [at Villa] isn't something I would rule out.
"I've had years of playing but, since I was 17, I have been on loan. I've spent the past few years at Chelsea, in and out of the team, and the experience I've gained from that is I'm happy just playing. That's what it comes down to in football."
Bertrand signed for Chelsea from Gillingham in 2005 and spent time on loan at Bournemouth, Oldham, Norwich City, Reading and Nottingham Forest before joining Villa this season.