Butler leaving DU for NHLSource: Denver Post ‘Star defenseman Chris Butler is leaving the University of Denver early to sign with the Buffalo Sabres. The junior took a physical today in Buffalo and is scheduled to return to Denver on Sunday.’ Related posts: Future Sabres hard at work Buffalo at Colorado Butler Earns All-Tourney Honors at Ice Breaker Miller on verge of leaving MSU Sabres will open new season at home