The Calgary Flames have signed centre Mikael Backlund to a six-year contract extension, the team announced Friday. The deal is worth $32.1 million, which means an annual cap hit of $5.35 million. Backlund is currently in the final year of a three-year, $10.725-million contract he signed in 2015 and was set to become an unrestricted free agent in the summer. The Vasteras, Sweden native was selected 24th overall by the Flames in the 2007 NHL Draft and has since developed into one of the top two-way centres in the NHL, finishing fourth in Selke Trophy voting in the 2016-17 season.