The Chicago Cubs have talked with multiple teams about trades involving ace Jeff Samardzija and veteran starter Jason Hammel, according to the Chicago Sun-Times.

Citing multiple sources, the Sun-Times reported that the Cubs may already have begun fielding trade offers from multiple teams. The report identified the Atlanta Braves, Seattle Mariners and Toronto Blue Jays as some of the teams most interested in acquiring either Samardzija or Hammel.

Hammel could generate more interest than Samardzija because he likely will not command as large of a return in a trade, sources told ESPN's Buster Olney earlier this week. Hammel could be targeted by teams needing short-term rotation help like the Blue Jays, Pittsburgh Pirates, Oakland Athletics, Baltimore Orioles and Miami Marlins, according to Olney.

Samardzija is set to become a free agent after the 2015 season and has been speculated as a top trade target since this past offseason, when he was unable to agree to a long-term deal with the Cubs.