Regin's contract is for $650,000, according to a source.
Regin, 28, was acquired by the Blackhawks in a trade with the New York Islanders in February. He had two goals, two assists and was a plus-5 in 17 regular-season games and had zero points and was a minus-1 in five playoff games for the Blackhawks.
Regin became an unrestricted free agent on Tuesday, but still expressed interest in re-signing with the Blackhawks. His agent Craig Oster of Newport Sports Management said Tuesday morning he and the Blackhawks were in discussions.
Regin is likely to provide the Blackhawks depth at center and wing as he did last season. He didn't play consistently after arriving from the Islanders, but he had positive performances when he was in the lineup. He had a Corsi (shot differential) of better than 50 percent in 11-of-17 regular-season games.
Regin said after the season he enjoyed playing for the Blackhawks.
"It was really fun to be a part of such a good team and a winning team that I think the whole atmosphere around this organization, how the players treat everything, they expect to win every night, they expect to win the Cup every year," Regin said on June 3. "To be a part of that was really cool. Obviously I would have liked to play more at times, like every player you want to play as much as you can. At times, you probably feel that you should play more. But that's the way it is, there are a lot of guys that want to play and somebody has to sit out. Sometimes it's disappointing. You just try to stay positive and work your way back in there."