10:56am: The Athletics are also responsible for the $1.35MM buyout on Drew's mutual option for 2013, Ken Rosenthal of FOX Sports reports (on Twitter).
TUESDAY, 7:30am: The Athletics will pay the rest of Drew's 2012 salary, John Shea of the San Francisco Chronicle reports (on Twitter). Assistant GM David Forst says the A's haven't yet decided whether to pick up their side of Drew's 2013 mutual option. "Let's see how the next six weeks go," Forst told Casey Pratt of CSN Bay Area (on Twitter).
The Athletics were linked heavily to the 29-year-old Drew at this year's non-waiver trade deadline, but no deal was reached. Drew suffered a massive ankle injury last July that ended his season and cost him the first three months of this year's campaign. Batting just .193/.290/.311, Drew has yet to rediscover his stroke at the plate. That line is remarkably similar to the .191/.260/.304 batting line produced by Oakland shortstops as a whole this season, however. And, as a career .270/.330/.442 hitter entering this season, Drew presents considerably more upside.
It became apparent that Drew would be a trade candidate earlier this season when Diamondbacks managing partner Ken Kendrick openly expressed his disappointment with Drew's lengthy recovery time in the media. Drew has roughly $1.9MM of his $7.75MM salary remaining this season. His contract contains a $10MM mutual option for 2013, though Oakland will presumably opt for the $1.35MM buyout instead.
Jamieson, 23, was Oakland's 17th-round selection in the 2011 draft. The Ontario native is batting .234/.343/.379 in 540 plate appearances for Class-A Burlington this season, appearing almost exclusively at shortstop.
Steve Adams contributed to this post.