Former Chelsea boss Claudio Ranieri says the future of Blues manager Jose Mourinho will be in doubt if they only win the Carling Cup this season.
Mourinho has won the Premiership twice in two seasons
"Roman Abramovich wants to win the Champions League," Ranieri told BBC Radio Five Live. "He wants Chelsea at the top of the world.
"Jose Mourinho is working very well but I don't know what could happen."
Asked whether the Carling Cup would be enough to satisfy Abramovich, Ranieri said: "No, I don't think so."
The speculation? Again? More? I thought we had cleared this all up
As Mourinho's third season in charge nears a conclusion, Chelsea have won two Premiership titles and the Carling Cup twice under the Portuguese manager.
But his team drew with Bolton last Saturday to severely dent their hopes of retaining the Premiership and lost their Champions League semi-final at Liverpool on Tuesday.
Mourinho's team are in the FA Cup final, against Manchester United at Wembley on 19 May.
Chelsea chief executive Peter Kenyon appeared to end speculation over Mourinho's future by stating on 20 April: "Jose's got a contract until 2010 and we're not going to sack him."
But Abramovich was not in attendance at Anfield on Tuesday - prompting questions over Mourinho's future.
And when the Chelsea boss was asked about the situation after defeat to Liverpool, he said "The speculation? Again? More?
"I thought we had cleared this all up. We will keep going. There is always a next chance, next season is another season.
"I feel we deserve to be in a final, three times now in four seasons we get this close, we deserve a final.
"We are strong characters, but we have had such a difficult season ahead of this situation because of our injuries, and that is because of our character.
"Next season the group will be little different to the group we have now. Our intention is to keep a big percentage of these players, maybe two or three changes which is normal in a club like us."