Currently an unrestricted free agent after finishing up a two-year, $9.5-million deal this season, the 39-year-old will not be offered a new contract by the Senators, general manager Pierre Dorion told the media Wednesday.
"He's the best goalie we've ever had," Dorion said of Anderson. "It's time for us to take another direction and we thank him for everything he did."
A member of the Senators for the past decade, joining the club after stints in Colorado, Florida and Chicago, Anderson holds the majority of the Senators' all-time goaltending records, including those for most games played and most wins.
The Park Ridge, Ill., native suited up for 34 Senators game this season, posting a .902 save percentage and 3.25 goals-against average in that span.
Dorion also said he expects longtime Senator Mark Borowiecki to become an unrestricted free agent.