The 25-year-old Abdelkader had eight goals and 14 assists in 81 games last season for Detroit. He's played 209 games for the Red Wings over the last five seasons.
The 29-year-old Colaiacovo was a free agent after appearing in 370 games in nine NHL seasons for the Toronto Maple Leafs and St. Louis Blues. He had two goals and 17 assists in 64 games for the Blues in 2011-12.
I'm here to develop a winning culture and a winning team. There is a bright future ahead of this team. A lot of young, great hockey players here and on the way … a fan base that's passionate about the game of hockey.
— Dan Bylsma after being introduced as new coach of the Buffalo Sabres