Former Cheslea defender Frank Leboeuf has Thomas Tuchel that winning the Champions League two seasons in a row is "almost impossible."
The Blues are aiming to repeat their success from last term, when they defeated Manchester City in the final to lift the trophy.
They are also aiming to win the Premier League after significantly strengthening manager Tuchel's squad over the summer.
"I'm not sure if any of the fans of those four clubs would be happy with just the Carabao Cup.
"The club doesn't care about it and the fans don't care about it, what they want is at least the FA Cup, if not the Premier League or Champions League.
"Only one team can win each competition, though, and Chelsea have been lucky enough to win the Champions League last season but it was kind of a miracle really.
"Tuchel came in and changed some stuff and it worked and nobody expected Chelsea to win.
"Right now an FA Cup would be nice for Chelsea and the Premier League or the Champions League would be absolutely fantastic.
"The Champions League is the most unrealistic of the three because it was only Real Madrid that was able to win it three times consecutively.
"I would love Chelsea to win it just two times in a row but this is why it is unrealistic.
"Chelsea won it last season and to win it again would be great but almost impossible if we read the stats."
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