"You've always got to try to get better," Mattingly said. "You do worry a little if you have a clubhouse that gets along; you want to create a baseball environment for everybody. But this is professional sports and we're here to win and be the best club we can be.
"It's hard to say, 'We need to get rid of this guy and get another guy in.' If we get guys that don't fit, they won't stay around."
In addition to Dempster and Victorino, who clearly are the Dodgers' top two targets, the club has been rumored in talks for starting pitchers James Shields and Matt Garza, slugger Corey Hart, reliever Brandon League and outfielder Hunter Pence.