In return for Jackson, the Mariners reportedly received a player to be named later and $211,100 in international signing bonus money. The deal has since been announced by Chicago.
The 28-year-old Jackson is a free agent at the end of the season. He is having a solid year, hitting .272/.312/.387/.699 (98 OPS+) with eight homers and 38 runs batted in over 448 plate appearances. Jackson is currently heating up, posting a .837 OPS over the last 28 days, making him a good August trade candidate.
Jackson reportedly cleared waivers earlier in the month and drew interest from the Rangers and Orioles, with the latter team apparently trying to get a deal done with the Mariners before the Cubs got him.
For the Cubs, Jackson represents more good right-handed hitting outfield help off the bench. With Jorge Soler on the DL, the Cubs decided to grab another righty outfielder. Matt Szczur and Chris Denorfia are also right-handed hitting outfield depth in Chicago.