Ghana midfielder Isaac Twum faces a short spell on the sidelines after suffering an injury for IK Start.
The Ghanaian international sustained the injury during his side's 3-1 loss against Molde in the Norwegian top flight league on Sunday.
The 18-year-old, who returned from injury some few weeks ago, was substituted in the game with just 18 minutes on the clock after clashing with Fredrik Brustad in the early part of the game.
It means that Twum will miss this weekend's clash with Stromsgodset but he's expected to make a comeback for Mark Dempsey's side in their Norwegian Cup tie against HamKam.