Portadown have suffered a blow ahead of their Carling Premiership clash with Crusaders at Shamrock Park.
Tim Mouncey could miss the rest of the season with a knee injury sustained in last weekend's win at Distillery.
The midfielder is set to have a MRI scan to determine the extent of ligament and cartilage damage.
Crues midfielder Matt Hazley is ruled out because of a dead leg so Ryan McCann is drafted into the squad to fill the void.
League leaders Linfield will be without winger Neil Dougan for the Windsor Park game against Ballymena United due to illness.
"We are expecting a very tough contest," Blues boss David Jeffrey told the club website.
"Ballymena will want to build on their good result last weekend while we have to continue our recent good form."
Cliftonville will be on a high ahead of their trip to Dungannon Swifts after winning the Co Antrim Shield on Tuesday night.
Reds midfielder George McMullan and Swifts full-back Ryan O'Neill return from suspension.
Lisburn Distillery striker David Cushley is back from a ban as the bottom club prepares to take on Glentoran at the Oval.
Suspension rules Coleraine pair Johnny Black and Gareth Tommons out of the visit to Donegal Celtic.
Glenavon defender Brendan Shannon serves a ban as caretaker boss Pat McAllister takes charge of the Lurgan Blues for the first time against Carrick Rangers at Seaview.