McCann, 18, finished second on Sault Ste. Marie of the Ontario Hockey League in goals (27) and points (62) in 64 games last season. He was an OHL All-Rookie Second Team selection in 2012-13 after scoring 21 goals and finishing with 44 points in 64 games for the Greyhounds.
The native of London, Ontario, was taken by Vancouver with the 24th pick in this year's draft, a selection the Canucks acquired in the trade that sent center Ryan Kesler to the Anaheim Ducks.
This team has been a real treat to say you've been the head coach of them. I'm extremely proud of this group ... after the disappointment of (the Game 6 loss) is digested, it's always a lot easier as a coach when your team has emptied its tank, and that team emptied its tank for me for three months.
— Senators coach Dave Cameron after getting eliminated in the first round by the Canadiens