It's actually a pretty ideal situation contractually. He is only eligible for a 1 year entry level contract. If he comes in, and makes the team, great. If not, he goes to the AHL or the two parties mutually agree to let him out of his contract so he can return to Europe.
Obviously, they would have to assess his ability to make an impact at the NHL level, but he is a bottom 6 player that can bring a lot to the table. The Leafs could certainly use an agitating player. Anything is an upgrade over Sjostrom.
Is he NHL ready? Or is he a Marcel Mueller type requiring years of seasoning?
Yeah he is ready. Two years ago at WC even team canada struggled with him. He is lock for WC teams for team finland and is close to be at world cup(hosted?) and olympics 2014. most who have seen him playing(mostly russian and finnish people) thinks he could play nearly every NHL-teams bottom 6. I'm just saying you guys got an gem in your system. Fan favourite everywhere he plays. He never gonna be point scorer for you but he plays with his heart and fights like warrior, has ruutu-like agitating ability, his speed is more than enough in NHL, shot is good NHL-level, hes one of the toughest/grittiest guys in europe and the most important attitude and team playing. Hes very funny guy aswell. He gave an interview before canada game at 2009wc's, reporter asked are you nervous playing against superstars of canada, He answered no i just played against them on ps3.
Komarov has taken huge steps in offensive game aswell. I believe this season was the first one with TOP6 minutes in the KHL and he was 2nd best in his team in the regular season and best scorer in the playoffs with 6gp 4g+2a. Now i dont know how that would trasfer to NHL but if he adapts to the style he could produce much more than "agitating" or skating.