Ebert signed a one-year, two-way contract with Ottawa on Monday.
Nilsson agreed to terms on a two-year, $5.2 million contract with Ottawa on Wednesday.
Chabot (foot) recorded three shots and a minus-1 rating for Team Canada in Friday's 3-1 defeat to Finland.
Duclair, a restricted free agent, wants to return to the Senators next season, the Ottawa Sun reports.
Chabot will need to undergo an MRI on his foot before determining whether he can join Canada for the World Championship, Wayne Scanlan of the Ottawa Citizen reports.
Harpur (illness) missed this last three games of the year and will turn his attention to 2019-20.
The Senators reassigned Englund to AHL Belleville on Sunday, Bruce Garrioch of the Ottawa Sun reports.
Condon hopes to return for training camp in the fall after a lost campaign.
Anderson will guard the goal when the Sens host the Blue Jackets in the season finale Saturday.
Borowiecki (upper body) is expected to play in the season finale against the Blue Jackets on Saturday, Bruce Garrioch of the Ottawa Sun reports.
Ryan (undisclosed) is expected to play in Saturday's regular-season finale against the Blue Jackets, Bruce Garrioch of the Ottawa Sun reports.
Wolanin was sent down to AHL Belleville on Friday.
The Senators reassigned Balcers to AHL Belleville on Friday.
Daccord turned aside 35 of 40 shots Thursday, absorbing a 5-2 loss to Buffalo in his first NHL game.
Pageau scored his team's final goal of the night in a 5-2 loss to Buffalo on Thursday.
Harpur (illness) will not play in Thursday's road game against the Sabres, Bruce Garrioch of the Ottawa Sun reports.
Ryan will not play Thursday due to an injury suffered while blocking a shot during Wednesday's contest against the Rangers, TSN 1200 reports.
Nilsson will guard the cage in Wednesday's road game against the Rangers, Bruce Garrioch of the Ottawa Sun reports.
Borowiecki (upper body) won't join the Senators on their upcoming two-game road trip, Bruce Garrioch of the Ottawa Sun reports.
The Senators opted to reassign Wolanin to AHL Belleveille on Tuesday.
Englund was called up from AHL Belleville on Tuesday.
Anderson yielded five goals on 26 shots in Monday's loss to the Lightning.
Daccord signed a two-year, entry-level contract with the Senators on Monday.
Borowiecki (upper body) won't play in Monday's game versus the Lightning, Dean Brown of the Senators Radio Network reports.
Anderson will tend the home twine in Monday's game versus the Lightning.