Why Brunner is still unsigned

Damien Brunner may very well have the most upside of any unrestricted free agent left on the open market. After all, he piled up 12 goals and 26 points over 44 games in his first NHL season, then lit the lamp five more times in the playoffs. Those are decent numbers and, at 27 years of age, he has plenty of good hockey in front of him. So why hasn't someone scooped him up yet?