The signing has yet to be made official, but multiple sources say it will be for two years and is expected to reach $10 million.
Davis' departure hardly comes as a surprise considering the Blue Jays were never really in the market to re-sign him. Rookie Anthony Gose has the ability to take over as the fourth outfielder and provides similar speed off the bench.
Even so, there's no question that the loss of Davis is a bit of a blow to the organization. He was an ideal candidate to platoon at designated hitter with Adam Lind while also serving as a fourth outfielder and late-game pinch-runner.
Davis recorded 125 stolen bases over the past three years while appearing in at least 95 games during each of those seasons. He'll likely fill a similar role in Detroit, where he is expected to platoon in left field with Andy Dirks.
The 33-year-old Davis is a career .268 hitter over the course of eight seasons in the Major Leagues. He was acquired from the A's prior to the 2011 season in exchange for pitchers Danny Farquhar and Trystan Magnuson.
Gregor Chisholm is a reporter for MLB.com. Read his blog, North of the Border, and follow him on Twitter @gregorMLB. This story was not subject to the approval of Major League Baseball or its clubs.