The Blues travel to Italy to face Juventus on Tuesday night, knowing a loss will severely damage their chances of progressing to the round-of-16 stage.
And Gullit, who spent three seasons in west London as both player and manager between 1995-98, argued that Roberto Di Matteo’s remodelling of the side into a more attacking outfit will require time to settle on the European stage, though he was less dismissive towards their hopes domestically.
|CHAMPIONS OF EUROPE AGAIN|
|14/1||Chelsea are 14/1 with bet365 to win this year's Champions League|
"Chelsea winning it last year was a surprise, I don’t think they can do it again," Gullit told The Daily Mirror.
"They are trying to change the way they play and are having mixed results, so they will have to work very hard to reach the latter stages again.
"I think Chelsea can be very strong in England. Di Matteo has bought some players who are more attacking than before.
"They will take some time to adjust the way they play and they will go on more ups and downs before they reach the top again."