COLUMBUS, Ohio - The Ottawa Senators say forward Clarke MacArthur will miss the rest of the season due to concussion issues.

The 31-year-old veteran left-winger has suffered four concussions in the last 19 months and hasn't played this season.

Senators GM Pierre Dorion told reporters this morning that MacArthur will sit out the remainder of the year on doctor's orders.

MacArthur missed all but four games last season due to a concussion. He was hit in an intra-squad scrimmage during training camp last fall and hasn't played since.

MacArthur signed a five-year contract extension worth US$23.25 million in 2014.

Dorion said Friday that MacArthur is "devastated" by the news.