Ahly's influential winger Ramadan Sobhi is still two weeks short of recovery, with the team likely to do without him once again in the vital clash away to South Africa's Mamelodi Sundowns, according to his agent.
Sobhi, who is on a season-long loan at his boyhood club from English side Huddersfield Town, has been out of action since injuring a hamstring muscle in December.
Ahly originally estimated that he would be out of action for six weeks, but his prolonged absence had puzzled the fans.
The Cairo giants' Swiss coach Rene Weiler also appeared at a loss as to why Sobhi remains on the sidelines, telling reporters before Saturday's African Champions League clash at home to Sundowns that he did not know when the 23-year-old would return to action.
"Ahly's initial estimate was not accurate … Sobhi's period of absence would extend to 10 weeks after he aggravated the injury," his agent Nader Shawky told Egyptian website FilGoal.com.
"He will remain out for a maximum period of two more weeks."
Sobhi has been a revelation in the early stages of the season, scoring five goals in nine appearances as Ahly made an explosive start to the defence of their Egyptian Premier League title.
His absence deprives the Red Devils of much-needed creativity but they still marched on in the Champions League, their primary target this season, as they beat Sundowns 2-0 at home in the first leg of the quarterfinal.
The second leg takes place in Pretoria on Saturday.