Christopher Vivell is the new technical director.
German Vivell oversaw the signing of Erling Haaland while he was head of scouting and recruitment atRB Salzburg.
His most recent position was at a Budesliga side.
Vivell takes over from Cech who left in the summer after three years.
Vivell would support Graham Potter, according to Todd Boehly.
Boehly said they were delighted that Christopher was taking up the leadership role.
His work in Germany and Austria speak for themselves. We are confident that he will keep on progressing.
He will support Graham and the ownership group and help advance the club's vision.
When it comes to the club's transfer ambitions, Vivell's connections to the club could work in their favor, as the club have been linked with two players.
Vivell said that he was excited to be joining the club and that they were building the most exciting project in global football.
The club has a lot of potential to succeed.
There is a clear and sustainable philosophy underpinned by performance analysis, data and innovation under the new ownership of Graham Potter.
After the World Cup, the Blues will play a home game against Bournemouth on December 27.