Zamalek striker Bassem Morsi has been suspended indefinitely and fined EGP 300,000 following an argument with football director Abdel-Halim Ali at Wednesday's training session.
The Whites' management also decided to sell the 24-year-old attacker when the summer transfer window reopens, the club announced on their official website on Thursday.
Morsi had an argument with teammate Mohamed Salem and it escalated to the football director.
He was suspended from trainings and omitted from the squad that played Dakhleya in the league on Thursday.
The international striker has been a key figure for the Whites, scoring 18 goals that helped them claim the league title as well as a double against arch-rivals Ahly in the final of Egypt Cup, which led to them claiming the double accolade for the first time since 1988.
But since the beginning of the new campaign Morsi has struggled to reproduce his form, scoring only twice. He has also been involved in several disputes, leading to him losing his place in the starting lineup to Zambian striker Emmanuel Mayuka.
He was also dropped from the Egypt squad which took on Nigeria in a double-header in the Africa Cup of Nations qualifiers.
The club's management also fined midfielder Mohamed Ibrahim and striker Mohamed Salem EGP 300,000 each for their behaviour related to the dispute this week.
Zamalek are second in the Egyptian Premier League table with 42 points, eight behind rivals and leaders Ahly who will face Enppi late on Friday.
(For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)