The fact that it is Johnson makes the news even harder to take as he had been filling in admirably in the 'problem' left-back position vacated by Martin Grainger's long term injury lay-off.
Early reports are suggesting that Johnson, who limped out of the Euro 2004 qualifier at Windsor Park after 84 minutes, has a hamstring strain.
If this proves to be true that would make him a major doubt for the trip to The Hawthorns on Saturday.
If you would like the top stories on Singing The Blues to be emailed to you for FREE on a weekly or daily basis CLICK HERE