The former chairman of Egyptian football club Zamalek was sentenced to three years in prison for defaming court officials, judicial sources said.
Mortada Mansour was sentenced to three years in jail by a criminal court in Cairo for "insulting" court officials and levelling accusations of corruption against them.
Mansour was suspended from his club's presidency last year for inappropriate behaviour during a derby against Cairo arch-rivals Ahly.
He challenged the decision in court and was initially reinstated before the supreme administrative court eventually upheld his suspension.
Mansour, himself a former judge, was detained by police after storming the offices of the court's top judge in March.
Zamalek currently sits third in the Egyptian league, 11 points behind leaders and African champions Ahly.