The Blues have had an indifferent start to the league season, losing two of their opening six Premier League fixtures.
Chelsea FC head coach Thomas Tuchel has been sacked.
It comes less than a day after the Blues lost 1-0 to Dinamo Zagreb in the Champions League group stage.
They have had an indifferent start to the league season, losing two of their opening six Premier League fixtures.
In a statement, the club said Tuchel “will rightly have a place in Chelsea’s history after winning the Champions League, the Super Cup and Club World Cup in his time here.”
It added: “As the new ownership group reaches 100 days since taking over the club, and as it continues its hard work to take the club forward, the new owners believe it is the right time to make this transition.
“Chelsea’s coaching staff will take charge of the team for training and the preparation of our upcoming matches as the club moves swiftly to appoint a new head coach.”
It comes after Tuchel criticised Chelsea’s “huge underperformance” in the Champions League group match, saying his side lacked “hunger and intensity” in the shock 1-0 loss at Dinamo Zagreb.
“I’m angry on myself,” he said. “I’m angry on our performance. It’s not aggressive enough on the ball, it’s not enough individually or enough as a team.
The latest development comes after new owners Boehly and Eghbali paid a world-record sports franchise £4.25billion to buy Chelsea from Russian billionaire Abramovich at the end of May.
The ambitious US magnates are in the process of overhauling every aspect of the Blues’ operation, and have acted quickly to unseat Tuchel.
The highly regarded German coach has overseen three defeats in seven matches in the new campaign, after the Blues invested a one-window Premier League record £273million to revamp the squad.
Brighton boss Graham Potter and former PSG and Tottenham coach Mauricio Pochettino are thought to be among the early candidates for new Chelsea manager.