Australian sources fear that Daniel Arzani has tore his ACL.
Those letters are feared by every player leading to a nine month lay off meaning the best part of a year out of action.
The anterior cruciate ligament is one of the four ligaments that hold the knee together with the FTBL website claiming that Australian Federation already advised about the extent of the injury.
Celtic boss Brendan Rodgers was initially optimistic about the injury and hoped it wasn’t too bad as Arzani managed a wave to fans from the stretcher.
But physios believe the injury is actually even worse than initially feared.
If the diagnosis is correct, the teenager will likely miss the rest of the season and Australia’s Asian Cup campaign in January.
Socceroos coach Graham Arnold should hear the full extent of the injury tomorrow.
“We’ve been told it’s his ACL,” said a source. “Obviously we hope it’s not, but that’s the early indication.”
Reports of a possible left ACL injury for young Aussie Daniel Arzani, unfortunately concern per video would be for an ACL injury with non contact mechanism. Best case hope for MCL/meniscus injury. Likely 9 month recovery if ACL injury confirmed, if only MCL/meniscus 6-8 weeks pic.twitter.com/8HSrjct8h1
— NRL PHYSIO (@nrlphysio) November 1, 2018
If it is an ACL injury Arzani is likely to go home to Australia for his recuperation before returning to Manchester City.
The 19 year old made his Celtic debut in the 57th minute when he replaced Tom Rogic with Celtic leading 5-0.
Arzani looked confident and assured on the ball, creating one gilt edged chance for Kieran Tierney but a slip in the 77th minute brought his involvement to an end.
Celtic physio Tim Wilkinson tried to get him to stand up but it was obvious that it was causing pain.
When Wilkinson got on to treat the player Arzani did make a gesture that seemed like a tearing movement.
