The shot-stopper was an unused substitute in wins against Zimbabwe and DR Congo.
Gennesh’s injury was confirmed by the Egypt Football Association (EFA) and Javier Aguirre’s men will have to proceed with Mohamed El-Shenawy and Ahmed El-Shenawy for the rest of the competition.
"Scans showed that Gennesh has suffered a rupture to his Achilles tendon. It will be difficult for the player to continue in the tournament," the Egyptian FA stated on their official Twitter page.
اصابة جنش بقطع في وتر "إكليس"— EFA.eg (@EFA) June 28, 2019
أثبتت الأشعة التي أجريت لمحمود جنش حارس مرمى المنتخب الوطني عن إصابته بقطع في وتر " إكليس" وتم إبلاغ الجهاز الطبي بنادي الزمالك ، حيث يصعب على اللاعب استكمال البطولة .
وكان جنش قد أصيب في مران الليلة. pic.twitter.com/lSCSvDIw1b
The Zamalek keeper will likely miss the remainder of this season’s Egyptian Premier League and the first half of next season.
The 30-year-old was in contention to feature for the host nation in their final Group A game against Uganda on June 30, but those hopes have been dashed.