MacEwen will be taking an indefinite leave of absence for personal reasons, AHL Belleville announced Tuesday.
MacEwen was reassigned to AHL Belleville on Thursday.
MacEwen was recalled from AHL Belleville on Friday.
MacEwan was placed on waivers by the Senators on Sunday.
MacEwan was removed from injured reserve and will play Sunday against Washington, Bruce Garrioch of the Ottawa Sun reports.
MacEwen (lower body) was placed on injured reserve Tuesday, per the NHL media site.
MacEwen was recalled from AHL Belleville on Friday.
MacEwen was placed on waivers Monday, per Chris Johnston of The Athletic.
MacEwen (illness) will be a game-time decision Saturday in Edmonton, according to TSN 1200 Ottawa.
MacEwen will not be in action versus Seattle on Thursday due to an illness, TSN 1200 Ottawa reports.