"Diego Costa's out which means we have to solve that problem in 24 hours," new interim coach Guus Hiddink told reporters.
A stunning free kick from Willian seven minutes from time gave Chelsea a nervy and hard-fought 2-1 UEFA Champions League Group G win over Dynamo Kiev on Wednesday to lift some of the gloom surrounding Stamford Bridge.
Chelsea skipper John Terry signed a new five-year contract with the club on Friday, ending months of speculation about his future.
Manchester United have bid 35 million pounds for Chelsea playmaker Juan Mata, British media reported on Wednesday.
Premier League champions Chelsea are getting their confidence back after winning back-to-back games for only the second time this campaign, says defender Cesar Azpilicueta.
The win put United back in second place in the Premier League, still 13 points behind neighbours Manchester City, while Chelsea drop below Tottenham into fifth place.
An 85th minute goal from a free kick by Ireland winger Damien Duff gave Chelsea a 2-1 victory over Manchester United.
Chelsea manager Guus Hiddink has urged doctors at the Football Association (FA) and Premier League clubs to stand up against English football's gruelling fixture list.
Chelsea midfielder Cesc Fabregas has denied suggestions of a rift with manager Jose Mourinho, accusing "certain individuals from outside" of trying to destabilise the club and refuting reports that he is leading an alleged dressing-room revolt.
Willian and Lionel Messi scored as Chelsea and Barcelona finished 1-1 after an absorbing first leg of their Champions League last 16 tie on Tuesday, while Bayern Munich, helped by two typical Thomas Mueller goals and two from Robert Lewandowski, romped to a 5-0 home win over Besiktas.
IMAGES from Saturday's action in the English Premier League.
The Portugal defender signed a three-year contract for around 30 million euros.
The Argentine is reportedly unhappy with coach Enrique's way of running the dressing room at Barcelona.
Chelsea's players must look at themselves and start performing, former Blues stalwart Frank Lampard said as speculation continues to swirl over the future of manager Jose Mourinho.
English football giants Chelsea on Tuesday met officials of the All India Football Federation (AIFF) in a bid to help development of the sport in the country. Chelsea chief executive officer Peter Kenyon held discussions with AIFF general secretary Alberto Colaco and national chief coach Bob Houghton in Panaji.
Last season's beaten Champions League finalists, began their new campaign with a convincing 4-0 victory over Girondins Bordeaux in their Group A match at Stamford Bridge on Tuesday.
Captain John Terry may have played his final game for Chelsea after receiving his second red card of the season in Saturday's 3-2 Premier League defeat at Sunderland.
Chelsea have signed Portugal winger Ricardo Quaresma on loan from Inter Milan until the end of the season, the Premier League club said on Monday.
Country's third-largest software services firm Wipro has said it has been chosen as the official digital and IT partner for Chelsea Football Club.
This and more from the happenings in the world of football
The club spokesman said no immediate announcement would be made on Ranieri's successor, but added the club expected to say something within the next 48 hours.
Following Chelsea's tame draw against Manchester City, questions are being raised about the Jose Mourinho-managed team's game plan and attitude.
The Chelsea captain signed a revised five-year contract to stay with the English Premier League club until 2009.
Chelsea brushed aside London rivals West Ham United with a 2-1 away win that restored their 10-point lead at the top of the Premier League on Monday.
Striker Didier Drogba scored on his debut as Chelsea won 3-0 in the Champions World Series.
Bayern Munich midfielder Bastian Schweinsteiger is doubtful for their Super Cup game against Chelsea on Friday in Prague after straining his ankle in a 1-1 Bundesliga draw at Freiburg on Tuesday.
Leeds chairman Ken Bates reported Chelsea to the FA on August 2 over alleged illegal approaches to players.
Brazil defender David Luiz is overjoyed to be back for a second spell at Chelsea after leaving Paris St Germain on transfer deadline day. The 29-year-old, who quit Stamford Bridge for Paris two years ago, has returned for a fee that media reports put at 34 million pounds ($45.09 million). Luiz won the Champions League, Europa League and FA Cup in his three years at Chelsea after joining from Benfica in 2011.
Images from the English Premier League matches played on Saturday
But the under fire Blues manager gets former player Frank Lampard's backing
CFR Cluj will create the upset of the season if they avoid defeat against Chelsea at Stamford Bridge on Tuesday and help stop last season's beaten finalists advancing to the last 16 of the Champions League. Chelsea have already failed to beat Cluj in the competition having drawn 0-0 in their first meeting in Group A in Romania in October.
News of all that's transpired on and off the football field
Zlatan Ibrahimovic scored the winner as Paris St Germain beat Chelsea 2-1 to knock them out of the Champions League for the second successive season at Stamford Bridge on Wednesday.
Former England international Rio Ferdinand feels Everton's John Stones should pick Manchester United over Chelsea if the defender prefers more playing time.
Manchester United's Jose Mourinho, humbled for the second time this season in front of the Chelsea fans who once idolised him, did not go quietly on Monday as he declared that he remains the London club's number one manager.
For the second time in five weeks, Chelsea have been fined for failing to control their players
Suggestions that Chelsea effectively bagged two trophies on Sunday were presumptuous.
Chelsea had the look of champions again as they maintained their comfortable seven-point advantage at the top of the Premier League with a 3-1 victory at Bournemouth on Saturday -- but Tottenham Hotspur will not give up the chase.
