"My personal goal is to come to training camp and compete for a spot," Butler told the St. Louis Post-Dispatch. "I have no intention of playing in the American League, even though it's a two-way deal. I feel like I'm still an NHL player ... it's just kind of a camp to take a step back and redefine myself as a player, come to a winning organization and a team and a franchise that I think is pretty close to achieving their ultimate goal."
Butler, 27, had two goals and 16 points in 82 games last season with the Calgary Flames. He has 10 goals and 75 points in 349 regular-season games with the Flames and Buffalo Sabres. He had an assist in 10 games with Buffalo in the 2011 Stanley Cup Playoffs.
A native of St. Louis, Butler was chosen by the Sabres in the fourth round (No. 96) of the 2005 NHL Draft.
"It's pretty exciting," Butler said, "getting the opportunity to put on the jersey that I've watched ever since I was a little kid, the jersey that I was watching when I fell in love with hockey."