Kammala wannan magana: Bayan cikakkun yanayi uku tare da Panthers, an yi musayar shi zuwa Calgary Flames a ranar 8 ga Maris, 2004, don
zagaye na biyu na zagaye (wanda aka yi amfani da shi don zaɓar David Booth). A cikin damarsa ta farko ta taka leda a gasar cin kofin Stanley, Nilson ya kai wasan karshe kuma ya zira kwallaye 11 a wasanni 26 na wasan. Zai yi wasa na tsawon shekaru uku tare da Calgary.