Jurasek was an unpopular figure with many supporters after cutting away travel subsidies, which is said to have saved the club about £250,000.
Chelsea Supporters’ Trust (CST) said Jurasek was “tone deaf” from the start of his appointment at Stamford Bridge.
“The CST first met Mr Jurasek in August 2023 ahead of the League Cup tie vs AFC Wimbledon,” a CST statement read.
“During the feisty meeting, he hoped that the team performed well that night and secured three points… this set the manner for his tone deaf tenure as CEO in which he made no effort to build a relationship with any supporter group.”
The group said Gannon’s appointment was a “positive change”.
Gannon is one of a number of upcoming changes at Stamford Bridge.
Todd Kline will join from Tottenham – once he completes his gardening leave – alongside former Manchester United employee Phil Lynch to complete Chelsea’s new management committee alongside chief of staff Casper Stylsvig and head of business James Murray.
The football side of the operation will continue to be run by co-sporting directors Paul Winstanley and Laurence Stewart, alongside hands-on input from co-owner Behdad Eghbali.