The Buffalo Bills have officially announced that they've acquired veteran quarterback Tarvaris Jackson in a trade from the Seattle Seahawks. The Bills send an "undisclosed draft pick" to Seattle for the seventh-year pro; previous reports indicate that it's a seventh-round pick that will become a sixth-rounder if Jackson is active for six games this season.

Coupled with the earlier release of Vince Young, the Bills won't need to make any more roster moves to meet the NFL's 75-man roster maximum by 4PM this afternoon. Here's an updated depth chart.

Jackson, 29, reportedly agreed to a re-structured contract with the Bills prior to the trade being processed. It's not yet known how much money Jackson will be making this season, though it's believed to be considerably less than the $4 million he was due to make with Seattle. Jackson immediately becomes the top backup to starter Ryan Fitzpatrick; the only question is whether or not he can learn enough of the offense by September 9 for the team to proceed with their plans to keep Brad Smith as the third quarterback.