Kase (concussion) is currently not traveling with the team and he will not play in Boston on Tuesday, per NHL.com.
The Maple Leafs will face Winnipeg at home Thursday before setting off on a four-game road trip starting Saturday. There's been little update on Kase since he suffered a concussion and he can be considered out indefinitely until new information is available. The 26-year-old has 27 points in 50 games this season.