On a day when Blues legend Frank Lampard returns to Stamford Bridge, Chelsea’s next permanent manager could already have their days numbered.

Lampard returns to the hotseat at Chelsea having agreed a deal until the end of the season, whilst owner Todd Boehly searches for his next permanent boss.

Julian Nagelsmann and Luis Enrique are the rumoured names to replace Graham Potter, and for any potential new Chelsea manager, they could only last a total of 489 days in the job, new data reveals.

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A study, compiled by Buzz Casino, analysed the last five permanent managers of each current Premier League club to determine the average stay for the coach in charge.

The data reveals that on average, a manager should last just over two years (774 days) in charge of a club in the Premier League from when they first walk through the door.

After the sacking of Potter at the weekend, Chelsea are on the search for their third manager this season, but with the average Blues boss only lasting just over one year and four months, and with a new ownership learning on the job, is it a position anyone would want?

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Of the Blues’ last five managers, recent Tottenham Hotspur boss, Antonio Conte has been their longest serving. The Italian managed the club for 741 days (2 years and 11 days) from July 2016 to July 2018.

Since then, the club has seen the likes of Maurizo Sarri, Frank Lampard and Thomas Tuchel fall before Potter since Conte left Stamford Bridge.

Arsenal have the best managers record in the EPL, due to Arsene Wenger’s 20 plus year stint in charge (7,864 days), whilst Manchester City and Liverpool follow suit with Pep Guardiola and Jurgen Klopp managing their respective clubs for more than 2,600 days each.