Matthews said he is ecstatic to have an opportunity to wear the Maple Leafs sweater.
"It's a dream come true and such a big honor, especially to a storied franchise like the Toronto Maple Leafs," Matthews said. "I intend to just be myself every day, be a good teammate, work hard and use my skills to the best of my abilities."
Maple Leafs general manager Lou Lamoriello siad he feels a great future is in store for Matthews.
"Very rarely are you able to get a center with the size and strength that complete a player," Lamoriello said. "He's a 200-foot player and we're just delighted."
Many expect Matthews to fill a top-six role out of training camp for Maple Leafs coach Mike Babcock next season. There's a good chance he could begin the season as Toronto's No. 2 center behind Nazem Kadri. No center has scored 30 goals in a season for the Maple Leafs since Mats Sundin, who had 32 goals and 78 points in 74 games in 2007-08.
"I don't really think about [being a savior for the Maple Leafs]," Matthews said. "Hockey is a team game and obviously I want to be an impact player. I want to make the team better and get better each day, so that's my goal going forward. This is a passionate hockey market, but I think I can take it."
Matthews, who played for Zurich in National League A in Switzerland's top professional league, was No. 1 on NHL Central Scouting's final ranking of international skaters.