Clutterbuck left the game against the Calgary Flames early in the third period after apparently suffering the injury while delivering a check.
The Islanders acquired the 25-year-old forward from the Minnesota Wild at the 2013 NHL Draft in exchange for prospect Nino Niederreiter. A restricted free agent at the time, Clutterbuck signed a four-year contract with the Islanders.
We think that Randy is a very good coach. Our players think that Randy is a very good coach. We think that he's going to get the most out of this group. With the addition of the two assistants, a bit of a different dynamic, we're very comfortable that this is a quality coaching staff that's going to maximize the potential of this team.
— Maple Leafs GM Dave Nonis on head coach Randy Carlyle and his staff