The Chicago Blackhawks released or reassigned nine players on Tuesday, paring their training camp roster to 47.
The Blackhawks assigned forward David Gilbert to the Rockford IceHogs of the American Hockey League and returned three players to their junior teams. Five other players were released from training camp
The defending Stanley Cup champions' active roster includes 28 forwards, 14 defensemen and five goaltenders.
Brassard likely will play for the Charlottetown Islanders of the Quebec Major Junior Hockey League this season.
Tampa Bay also signed 21-year-old forward Joel Vermin to a three-year, entry-level contract. The Lightning selected the Swiss native in the seventh round (No. 186) of the 2013 NHL Draft. Vermin had 13 goals and 35 points in 47 games with Bern of the Swiss A-League last season.
"Curtis is a first-round pick and obviously a player and prospect that we think has a good upside," Senators general manager Bryan Murray told the team's website. "We're trying to get our best players tied up and he is certainly one of the guys of the future in this organization so we're very, very happy to get him signed at this point."
The 17th pick of the draft, Lazar had 38 goals and 61 points in 72 games with the Edmonton Oil Kings of the Western Hockey League last season, and then had nine goals and two assists in 20 playoff games.