Carlson has been ruled out for Thursday's contest against Tampa Bay with a concussion.||||||| Carlson is considered week-to-week.

Minnesota Vikings coach Leslie Frazier also said that tight end John Carlson won't be ready to play Friday in a preseason game against San Diego. Frazier said Carlson might be able to play in the final preseason game on Aug. 30 at Houston.||||||| The Vikings signed Carlson as a free agent to pair him with Kyle Rudolph in their two-tight end sets for a boost to their passing game, but he sprained the medial collateral ligament in his right knee on July 31 and hasn't practiced since. Carlson missed the 2011 season after tearing the labrum in his left shoulder.

The Minnesota Vikings have signed John Carlson to a five-year deal, bringing the tight end back to his home state.||||||| The 27-year-old Carlson spent his first four seasons with the Seattle Seahawks. But he missed all of last season after needing shoulder surgery to repair a torn labrum that occurred in training camp. ESPN first reported the agreement, which includes $11 million in guaranteed money. Carlson grew up in Litchfield, about a 90-minute drive west of Minneapolis.

Carroll said Tuesday that Carlson will need season-ending surgery to fix a torn labrum in his shoulder that has sidelined him for the past two weeks of training camp.||||||| Carlson was expected to be used in multiple two tight end sets along with newcomer Zach Miller. Carlson is also in the final year of his contract with Seattle, making his future with the Seahawks tenuous.