Glentoran pair Elliott Morris and Sean Ward have signed new three-year deals ahead of Saturday's clash with Premiership leaders Linfield at the Oval.
The club said it would end speculation over of the futures of goalkeeper Morris and defender Ward.
Second-placed Crusaders will be without Chris Morrow and Declan Caddell for the game against Lisburn Distillery.
The inform midfielders are suspended for the Seaview encounter.
Defending champions Linfield and Glens are meeting in the second of three games between the sides in 10 days.
Linfield won the opening duel in the Irish Cup last Saturday while Windsor Park is the venue for Tuesday's league match.
The other end of the table sees a battle between Newry City and Donegal Celtic to avoid the drop.
With just four games left Newry trail DC by five points, so they will desperate for all three points when they travel to face Dungannon Swifts at Stangmore Park.
Donegal Celtic host Ballymena United at Suffolk Road with Sky Blues defender Michael Smith suspended.
Cliftonville's Conal Burns is banned for the trip to Portadown, who will be happy for a return to league action after three straight cup defeats.
Glenavon duo Willo McDonagh and Sammy Stewart remained sidelined through injury ahead of the clash with Coleraine at the Showgrounds.
Saturday 16 April - 1500 BST kick-off
Glentoran v Linfield
Crusaders v Lisburn Distillery
Portadown v Cliftonville
Coleraine v Glenavon
Donegal Celtic v Ballymena Utd
Dungannon Swifts v Newry City