The 49ers and Dobbs agreed to a contract Monday, Mike Garafolo of NFL Network reports.

Coach Kevin O'Connell said Friday that Dobbs will serve as the Vikings' No. 2 quarterback behind starter Nick Mullens in Sunday's game in Detroit.

Coach Kevin O'Connell announced Thursday that Jaren Hall, not Dobbs, will be Nick Mullens' backup for Saturday's game against the Bengals.

Dobbs will move into a backup role for Saturday's game against the Bengals with the Vikings naming Nick Mullens their Week 15 starting quarterback.

Dobbs will remain Minnesota's starting quarterback Sunday against the Raiders, Tom Pelissero and Ian Rapoport of NFL Network report.

Vikings head coach Kevin O'Connell said Monday that Dobbs will receive all the first-team reps in practice this week with the expectation that he starts Sunday against the Saints, Kevin Seifert of ESPN.com reports.

Dobbs will be Minnesota's backup quarterback behind Jaren Hall against the Falcons on Sunday, Ben Goessling of the Star Tribune reports.

Minnesota head coach Kevin O'Connell said that Dobbs, whom the Vikings acquired from the Cardinals on Tuesday, isn't expected to start Sunday's game at Atlanta but could be available to play, Rob Maaddi of the Associated Press reports.

The Cardinals traded Dobbs to the Vikings on Tuesday, Ian Rapoport of NFL Network reports.

Coach Jonathan Gannon said Monday that Dobbs won't start Sunday's game in Cleveland, Darren Urban of the Cardinals' official site reports.