Northern Ireland will be without Motherwell defender Stephen Craigan for Wednesday's friendly with Bulgaria at Windsor Park.
The 31-year-old will not be travelling to Belfast to join up with Nigel Worthington's squad due to Motherwell's rearranged Scottish Cup fifth-round tie with Dundee tomorrow.
His absence could give Jonny Evans, currently on loan at Sunderland from Manchester United, the chance to start for the first time in his favoured central defensive position.
Leicester's Gareth McAuley could also come into contention to partner captain Aaron Hughes at the back.
Celtic goalkeeper Michael McGovern has also pulled out of the squad with a broken finger but Birmingham midfielder Damien Johnson is set to return after an 11-month absence due to injuries.
