Zaki, who returned to action in the 3-1 league win over ENPPI last week, was stretchered off the second half with a hamstring injury.

However, Zamalek doctor Mostafa Al-Monayeri insists that the fresh setback has no relation with the hamstring tear Zaki sustained with Egypt against Algeria in June.

"It is totally untrue that Zaki has a chronic hamstring problem," the Zamalek chief medic told the club's official site.

"Scans proved that he pulled his hamstring against ENPPI, he only needs a few days to recover and he may well be fit for Petrojet (on August 20th).

"The injury he suffered with Egypt has been completely healed; it is different from the new problem."

Zaki missed out on Egypt's Confederations Cup campaign in South Africa and has been ruled out of Wednesday's friendly with Guinea as well.

The 26-year-old looks set to stay with Zamalek this season after a bumpy loan spell at Wigan last term.