Christiansen was most involved in retaining Malmö FF in the gold match when the team defeated AIK at home by 2-0. He started on the bench after a three-week injury period, but came in after 73 minutes and set the 1-0 goal five minutes later.
At the end of the match, however, the Danish was injured after a tackle against Sebastian Larsson and holding the pitch.
- It's the same damage as before. It sits in the right bet. Last time, he ran a three-week rehab. Now it may be that he gets to run the double and that means six weeks before he is back, says team doctor Pär Herbertsson to Sydsvenskan.
MFF meets Örebro away in the all-Swedish final on Saturday and then three group games matches await in the Europa League.