The Cubs agreed to trade Ryan Dempster to Atlanta earlier today, and they aren't done dealing yet. The Cubs and Dodgers are discussing a trade that would send right-hander Matt Garza to Los Angeles for a package of players including highly-regarded pitching prospect Zach Lee, Jim Bowden of ESPN.com and MLB Network reports (on Twitter).

Garza, 28, has a 3.91 ERA with 8.3 K/9 and 2.8 BB/9 in 103 2/3 innings this year. He earns $9.5MM and will go to arbitration one last time this offseason, when his salary can be expected to climb past $12MM. If the Dodgers acquire Garza this summer, they'd be eligible to obtain draft pick compensation for him should he depart as a free agent following the 2013 season.

Lee, 20, entered the season as the Dodgers' best prospect and the 62nd-best prospect in MLB, according to Baseball America. He has a 5.85 ERA with 8.1 K/9 and 2.6 BB/9 in 17 starts at Class A and Double-A so far this year. The Dodgers signed the 2010 first round selection to a $5.25MM bonus after selecting him 28th overall two years ago.