Chelsea manager Jose Mourinho is concerned that a “mole” among his squad is leaking details of his team selection to rival teams following the 2-1 defeat by Leicester City on Monday night, with the worry that he is being undermined at the club.

*UPDATE* Jose Mourinho has been sacked by Chelsea. Read the full story here.

Mourinho was outspoken in his criticism of the players following the loss at the King Power Stadium, blaming a number of his key squad members for “betraying” him after failing to convert their performances on the training ground into their results on the pitch.

And according to The Times, Mourinho is concerned that his team selection for the Premier League match was leaked to the Blues’s opponents ahead of kick-off, leading to the manager believing he has a mole in the squad that does not want Chelsea to improve matters at Stamford Bridge.

Chelsea manager Jose Mourinho (Getty Images)

Mourinho also has suspicion that his team selection was leaked to Porto ahead of Chelsea’s 3-0 Champions League victory last week after learning that the Portuguese club – which Mourinho used to manage – knew midfielder Cesc Fabregas had been dropped from the squad for the crucial group stage encounter.

The Chelsea manager ensures that team tactics aren’t leaked ahead of matches by instructing his players not to inform family members of whether they are playing or not, given his fear that important team news can be leaked to opponents. It’s added that Mourinho believes the leak came from within the Chelsea camp, although there is no suggestion that Fabregas is responsible for the information being given out.

Who could replace Jose Mourinho as Chelsea manager? Show all 14 1 /14 Who could replace Jose Mourinho as Chelsea manager? Who could replace Jose Mourinho as Chelsea manager? Antonio Conte The current Italy manager is Chelsea's preferred target should they dismiss Mourinho, as revealed by the Independent at the start of December. He could choose to combine his role with the Italian national team should the call come from Stamford Bridge, and he has a proven pedigree after leading Juventus back to the top of Serie A following their relegation. Could be available full-time next summer if he leaves his post with Italy after Euro 2016. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Pep Guardiola Reports have suggested that the current Bayern Munich manager would be Chelsea's favoured choice to replace Mourinho permanently, but convincing the former Barcelona coach to leave the Allianz Arena midway through the season would appear impossible. However, employing him at the end of the campaign could be a realistic option considering the Spaniard will be out of contract in the summer. Although there are rumours he is on the verge of signing a new deal. AP Who could replace Jose Mourinho as Chelsea manager? Carlo Ancelotti Has already managed Chelsea, during which time he led them to the Double in the 2009/10 season. There are few coaches with such an impressive track-record, but the fact he was shamefully sacked in the tunnel at Goodison Park could make the situation complicated. Would he want to return to a club that treated his with so little respect? The Italian has indicated he would prefer a return to management next season in the Premier League. Has said on more than one occasion that he doesn't like taking jobs midway through a season, while he is reported to have already agreed in principle to take over from Pep Guardiola at Bayern Munich 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Brendan Rodgers His availability makes Rodgers a viable option, although whether the former Liverpool manager matches the calibre of coach that Chelsea would want to employ is debatable. But the Northern Irishman can boast of nearly taking Liverpool to the title and few others in the game would be so desperate to prove themselves. Also has ties with the club having worked under Mourinho during the Special One's first spell at Chelsea. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Diego Simeone The Atletico Madrid manager is probably the most exciting option out there. Having led Madrid's second club out of the shadow of Real to the title in 2013/14, the Argentinian proved his combative intense style could yield results. Convincing him to leave his current post could be tricky though, with Simeone agreeing a contract until 2020 earlier this year. Chelsea would have to pay around £15m to Atletico in compensation to buy him out of his contract. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Ronald Koeman The former Netherlands international has impressed since coming to the Premier League. Having joined Southampton at a time most predicted would be tough for the club after numerous high-profile departures, Koeman led the club to a seventh placed finish thanks to some astute buys and exciting football. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Laurent Blanc The former France manager could have done little more at PSG since taking over at the mega-rich club, winning the league for the last two-years running and making the French side a force in the Champions League. Among the notable European scalps in recent years was the defeat of Chelsea at the Round of 16 stage in last season's competition, and, providing he stays in Paris, they will meet at the same stage of this year's tournament for the third year running. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? John Terry Captain. Leader. Legend. Manager? Few at Chelsea can claim to command as much respect as their long-term skipper. Whether he would want to step into the manager role is unclear, but as a short-term option until the end of the season, it could be the smoothest transition. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Gianfranco Zola Zola, who made 312 appearances and scored 80 goals for Chelsea after signing from Parma in 1996, is currently manager of Al Arabi in Qatar. He has signalled his ambition is to one day return to Stamford Bridge as manager. Getty Images Who could replace Jose Mourinho as Chelsea manager? Fabio Capello Former England manager Fabio Capello has been out of work since being dropped by Russia over the summer. He's said is open to taking over at Stamford Bridge, but how well the Italian would be received after his failures with the national team is unclear. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? Guus Hiddink Hiddink had a successful short stint as Chelsea manager in 2009 which saw the club win the FA Cup. The Dutchman was popular among fans and appears a sensible short-term choice. However, his most recent gig, as Netherlands manager, didn't go well. After overseeing a few poor results after replacing Louis van Gaal, he left his post and the national side failed to qualify for next summer's European Championships. Has been made the bookies' favourite. 2015 Getty Images Who could replace Jose Mourinho as Chelsea manager? David Moyes The former Manchester United manager was sacked by Real Sociedad at the start of November after making a poor start to the La Liga season. Moyes has since appeared on TV and confirmed that he has had numerous offers to return to management in England, and that he is seeking his next job. His availability could make him a possible target through to the end of the season. Getty Images Who could replace Jose Mourinho as Chelsea manager? Juande Ramos The Spaniard will be an unpopular choice after his disastrous spell in charge of Tottenham Hotspur between 2007 and 2008 that lasted just 54 matches. He led Spurs to the League Cup but started the next season with just two points from his first eight matches leading to the appointment of Harry Redknapp. Getty Images Who could replace Jose Mourinho as Chelsea manager? Avram Grant Another former Chelsea interim manager, the Israeli led the Blues to the Champions League final in 2008 after taking over after the first time Mourinho was sacked. Has had spells across Europe since but never replicated that success and was never the most popular figure amongst the Chelsea support.

Chelsea’s board members, including club owner Roman Abramovich, met on Wednesday afternoon to discuss Mourinho’s future, although the 52-year-old went about his business as usual after attending a Christmas party for young Chelsea fans and visiting a hospital along with the entire first-team squad.

However, he was openly critical of some of his players and claimed that certain team members need to “rethink” the way they go about their business off the pitch in a bid to improve performances on it.

“Some of them need to rethink how the way they live Chelsea, they live football, they live their job,” Mourinho said in an interview with Chelsea TV.

Jose Mourinho's worst post-match interviews in 2015

“Chelsea is big, football is more than a job, it’s a passion. Every match on the pitch you should live with an unbelievable passion.