Blackhawks working trade possibilities

CHICAGO -- Blackhawks general manager Stan Bowman said he was on the phone all day Sunday, making calls in advance of Monday's NHL trade deadline.

"We're talking to a lot of people," Bowman said before the Blackhawks' game against the Phoenix Coyotes. "I'm losing my voice here. I've been on the phone all day. You can't predict it. But we are aggressively trying to improve the team."

Bowman said that the Blackhawks continue to pursue depth at two positions.

"In a perfect world, you'd like to have a defenseman and a center," he said. "It's unlikely you're going to hit both those. We're working it on both fronts, because you don't know which one is going to come in your lap in the end."

Bowman said there isn't a deal in place which he's waiting to pull the trigger on.

"We've talked to a number of teams, but it's not like it's in our court to decide," he said. "We're waiting. I think just like we're waiting, they're waiting on someone else who's waiting on someone else. Once one or two trades happen, it's probably going to have a snowball effect."

Bowman said he's still "optimistic" a deal will get done before Monday afternoon's deadline.

Jesse Rogers covers the Blackhawks for ESPNChicago.com and ESPN 1000.