COSTA,RAMIRES,KENNEDY PARTY TILL 3;15AM

The Chelsea squad prepared for Saturday's match with Bournemouth by training just nine hours after the squad enjoyed a Christmas night out.

Diego Costa, Ramires and Kenedy were among the Blues stars pictured leaving the Libertine nightclub in London at 3.15am.

But they all reported for duty at Chelsea's Cobham base and were out on the training field shortly after midday as they continue their bid to revive their flagging season with three points against Eddie Howe's side.

Diego Costa (right) pictured in Chelsea training nine hours after being pictured leaving a London nightclub

Chelsea striker Diego Costa is escorted out of Libertine nightclub in London on Thursday morning

The under-fire Chelsea striker was out until 3.15am on Thursday morning with his Chelsea team-mates

The 27-year-old striker is driven home after spending a night at top London hotspot Libertine

 Chelsea sources have indicated that the entire squad were in the club on a team night out, fully sanctioned by Jose Mourinho who has no issues with it. They all went for a meal beforehand then continued at the night club.

The club felt there was little opportunity for the players to enjoy a Christmas night out together due to playing midweek in the Champions League next week, at home to Porto, and then moving into the busy festive period.

All of the players reported to training the following morning, where they did a full, high-intensity session, despite not arriving home until the early hours.

Wearing a black woolly hat and blue gloves, the Spanish striker was involved in the thick of the action. 

Costa, who has scored just three times in 11 appearances for Chelsea this season, threw a bib over his shoulder in the direction of Mourinho at White Hart Lane.

It is just the latest Costa incident in a season where his volatile temperament has come under scrutiny.

But he looked ready to put all that behind him by getting fully involved on the training ground at Cobham despite the lack of sleep. 

Blues midfielder Ramires joined his team-mates Costa and Kenedy for the night out in west London

Cesc Fabregas on the ball as Cesar Azpilicueta attempts to catch him during Chelsea's training session 

Oscar receives the ball under pressure from John Obi Mikel during Thursday's training session at Cobham

Chelsea youngster Ruben Loftus-Cheek takes on his team-mates during Thursday's training session

Nemanja Matic, wearing a protective face mask, on the ball at Cobham

Ruben Loftus-Cheek, Oscar and Nemanja Matic compete for the ball during the training ground match

Costa and DeGale, who defended his IBF super middleweight title against Lucian Bute in Canada on Saturday, were flanked by two security guards as they left the London nightspot.

Chelsea, who sit 14th in the league table following a poor start to the season, are in need of three points against struggling Bournemouth. 

The Portuguese manager laughed off the Spain striker's ill-temper, and stated that he understands why he was upset at not being involved in the London derby at Spurs.