Arthur Staple of Newsday is reporting the deal to be worth $11 million.
The Islanders acquired Clutterbuck, who was a restricted free agent, from the Minnesota Wild on June 30 in a trade Nino Niederreiter. Clutterbuck is 25 years old and has 110 points in 346 career NHL games, all with the Wild.
Clutterbuck, who played junior hockey with Islanders center John Tavares, had 10 points and a Minnesota team-high 155 hits in 42 games in 2012-13. He had two points in five games in the 2013 Stanley Cup Playoffs.
I'm just excited about the opportunity. I've been on the ice earlier than usual and in the weight room, pushing around a little more weights than usual. Every day I go into a workout with a smile on my face and ready to go. When you do have a little more responsibility, you want to take your lunch pail and get ready to work.
— Brian Elliott to Jeremy Rutherford of the Post-Dispatch on being the Blues' No. 1 goalie