Celtic boss Brendan Rodgers has confirmed that goalkeeper Craig Gordon and striker Leigh Griffiths both face lengthy injury lay-offs.
Gordon suffered a knee injury following a clash with former Hoops defender Efe Ambrose during the first half of Saturday's 1-0 home win against Hibernian in the Scottish Premiership.
The 35-year-old was substituted at half-time in the game and Rodgers has confirmed that he will be missing for 'up to 12 weeks' which means Dorus de Vries will step into the number one spot and cover will be sought before the transfer deadline on Wednesday night.
He is a great professional and while we are saying 12 weeks we are hoping he will be back sooner than that and all being well he will be.Brendan Rodgers
Rodgers said: "The medical staff had a look at him at half-time and there was that instability in the knee so it was just unfortunate.
"He is a great professional and while we are saying 12 weeks we are hoping he will be back sooner than that and all being well he will be.
"Dorus will come in and play. Has been a very loyal number two and settled into the club and has been very good in recent performances.
"He is calm and assured and experienced."
Meanwhile, Griffiths is facing a month out of action after he came off against Hibs with a recurrence of a calf injury just minutes after scoring the winner.
Rodgers added: "Leigh is disappointed after having a series of knocks over the course of the season."
Celtic are set to bring in Chelsea's 21-year-old attacker Charly Musonda ahead of the deadline to help ease the frustration of losing Griffiths.
The Hoops sit 11 points clear at the top of the Premierhsip and are on course to retain their title, but the loss of Gordon and Griffiths will be a big blow looking ahead to next month's Europa League clash against Russian outfit Zenit St Petersburg.
Celtic are 4/6 to qualify from their round of 32 tie, while Zenit are available at 11/10 to progress.
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