Coleraine midfielder Aaron Jarvis has been ruled out for three months with a knee injury.
The former Institute player has enjoyed a fine first season with the Bannsiders, scoring twice in their 2-2 draw with Glentoran earlier this month.
"It's a big blow losing Aaron," manager Oran Kearney told the club website.
"The side that has been so settled of late has got a little bit disrupted but it gives opportunities to other players to come in and step up to the plate."
A 1-0 defeat by Cliftonville on Saturday saw Coleraine slip to fourth in the Irish Premiership, with the Kearney's side now without a win in their last four league matches.
The Bannsiders host Ballymena United on Boxing Day before welcoming Linfield to the Showgrounds just two days later.