- Since Russian billionaire Roman Abramovich bought the club in 2003, Chelsea have won five Premier League titles and only finished outside the top six once, coming 10th in the 2015-16 season when Jose Mourinho was sacked.
- The Blues have had 10 different permanent managers, including two separate spells by Mourinho, in the Abramovich era.
Chelsea manager Frank Lampard has "one hell of a job on" this season, says former striker Chris Sutton.
The Blues lost 4-0 to Manchester United at Old Trafford on Sunday in Lampard's first Premier League game in charge.
Eden Hazard left Stamford Bridge to join Real Madrid in June, while Chelsea are banned from signing new players until next summer.
"It's like going into an Olympic rowing final and being asked to compete in a dinghy," said Sutton.
"And you've lost your Steve Redgrave."
Former England midfielder Lampard, 41, left Championship side Derby in July to take over at the club where he spent 13 years as a player.
He signed a three-year deal to succeed Maurizio Sarri, who left to join Juventus after winning the Europa League and finishing third in the Premier League in his sole season in charge.
Chelsea were given a two-window transfer ban by world governing body Fifa in February after an investigation into their signing of foreign under-18 players, which they are appealing to the Court of Arbitration for Sport.
"Frank Lampard has one hell of a job on after the club lost their best player," Sutton told BBC Radio 5 Live's Monday Night Club.
"Hazard carried them for years but he's gone and they can't bring players in.
"It all comes down to what the owner's expectation is and what Lampard has been told at the start of the season. The fans being behind Lampard will only last for so long."
Since Russian billionaire Roman Abramovich bought the club in 2003, Chelsea have won five Premier League titles and only finished outside the top six once, coming 10th in the 2015-16 season when Jose Mourinho was sacked.