Head coach Travis Green said Wednesday that he expects Cousins (upper body) to miss at least a week to 10 days, Bruce Garrioch of Postmedia reports.
Cousins took a hard hit from Jakob Chychrun during Tuesday's game against the Capitals and was briefly knocked out. The Senators indicated after the game that Cousins wasn't doing well, and the 33-year-old is facing a multi-game absence. Sammy Blais is a candidate to see increased playing time while Cousins is sidelined.