Grabner seems like an awesome guy! Hopefully he is healthy and motivated in the last year of his contract.
I see no problem bringing him to camp to add competition alongside all of the other forwards. Let the best players compete to win starting spots and keep the rest for depth. Injuries are bound to hit, it seems like the Isles never avoid the injury bug for long.
Then, at the trade deadline, a move or two can always be made. Unlike many teams, the Isles have cap room to work a deal and retain or accept some $$$ back in the right deal.
I think it is a luxury to have 14 NHL-caliber forwards in Bailey, Cizikas, Clutterbuck, Grabner, Grabo, Kulemin, Lee, Martin, Nelson, Nielsen, Okposo, Petrov, Strome and Tavares. I am happy to be free of the days of untested rookies, washed up vets and AHL retreads.