Wolf is aggressive for sure but I think he could take a few lessons from McGrattan in how to fight before he's ready to replace Bollig permanently. He never really got to compete in that way over in Germany.
Here's his 4 fights in the AHL. I'd say he's 2 and 2 so far but he seems to be willing and that's a plus compared to Bollig.
http://www.hockeyfights.com/players/20927