McCormick does not want to jeopardize his health, Murray said in providing the update during the Sabres' season-ending news conference on Monday. McCormick has not played since scoring a goal on Jan. 10, 2015, a day before he was hospitalized after the clot was discovered.
McCormick spent this past season on injured reserve after failing his pre-training camp physical. He is an 11-year veteran who spent parts of six seasons in Buffalo, and has one more year remaining on his contract.
Used mostly in a checking role, McCormick has 21 goals and 65 points in 405 career games.