Kelly signed a two-year, $1.65 million contract with the Avalanche on Monday, per Elliotte Friedman of Sportsnet.
Kelly will become an unrestricted free agent Monday after not receiving a qualifying offer from the Senators, Elliotte Friedman of Sportsnet reports.
Kelly will be available against Columbus on Thursday as he's served his two-game suspension.
Kelly will have a hearing with the NHL Department of Player Safety on Friday for an illegal check to the head he delivered on LA's Andreas Englund during Thursday's loss to the Kings.
Kelly scored a goal and added an assist in Thursday's 6-2 win over the Canadiens.
Kelly scored a goal on one shot against the Kraken on Thursday.
Kelly (kneecap) was on the ice for the Senators in Thursday's first training camp practice, Jon Abbott of TSN 1200 reports.
Kelly suffered a broken kneecap and will not return this season, TSN 1200 Ottawa reports.
Kelly (undisclosed) won't play Monday against Pittsburgh, TSN 1200 Ottawa reports.
Kelly (undisclosed) will not be in the lineup against Colorado on Thursday, TSN 1200 Ottawa reports.