Kassian completed Stage 2 of the NHL/NHLPA program in December and, after clearing waivers, was traded to the Oilers on Dec. 28 for goaltender Ben Scrivens.
Kassian, a first-round pick (No. 13) by the Buffalo Sabres in 2009, has a goal, two assists and 18 penalty minutes in seven games with the Oilers.
The 6-foot-3, 217-pound forward gives the skilled Oilers forwards a burly complement.
He is treating his opportunity with the Oilers as his last chance in the NHL.
"Yeah, most definitely. That's no secret," he said. "I've obviously run out of lives here. I'm fine with that. The past is the past. I'm happy to be here. I'm really going to take advantage of it."
The Oilers play the Canadiens on Saturday at the Bell Centre.
Kassian said he realizes he left Bergevin with no choice but to do what he did.
"When a GM sits you down and says, 'You're going to get one chance with me,' he's going to stick to his word," he said. "He's a man of his word. I respect Marc. That's the way it was.
"Sadly, that was the situation I had to be put in to learn from. I'm very grateful for the opportunity to get back to the NHL. I just want to kind of put my past behind me and show the new me."