Nilsson retired at the age of 31 because of concussion problems.

Ottawa traded Nilsson (concussion) and Marian Gaborik to Tampa Bay in exchange for Cedric Paquette, Braydon Coburn, and a 2022 second-round pick on Sunday.

Nilsson's (concussion) status hasn't changed with training camps right around the corner, Bruce Garrioch of the Ottawa Sun reports.

Nilsson (concussion) has yet to fully recover and continues to suffer from concussion symptoms, Bruce Garrioch of the Ottawa Sun reports.

General manager Pierre Dorion expects Nilsson (concussion) to be ready when the 2020-21 campaign gets underway, Bruce Garrioch of the Ottawa Sun reports.

Nilsson (concussion) passed his concussion baseline testing, Bruce Garrioch of the Ottawa Sun reports.

Nilsson (concussion) has been ruled out of the Senators upcoming five-game road trip, Steve Lloyd of TSN 1200 Ottawa reports.

Nilsson practiced for the first time since suffering his concussion Wednesday, but there's still no timetable for his return, Brent Wallace of TSN.ca reports.

Nilsson (concussion) is making progress but still needs time, Dean Brown of the Senators Radio Network reports.

Nilsson (concussion) has yet to resume skating and still has no clear timetable for a return, Bruce Garrioch reports.