Originally written on Fox Sports North  |  Last updated 10/26/14
MANKATO, Minn. The Minnesota Vikings brought tight end John Carlson in to add another facet to their offense. Now they will have to wait a few weeks before they get the chance to see how he can develop. Carlson, signed in the offseason from the Seattle Seahawks, suffered a knee injury in Tuesday's afternoon practice at training camp and coach Leslie Frazier said he could be sidelined for a few weeks. Frazier said the initial diagnosis was a sprained medial collateral ligament, but Carlson still had to have the proper tests."They were going to take him to get an MRI," Frazier said. "They just moved it around and that was their initial diagnosis."Carlson, who missed all of last season with a shoulder injury, had been working with the second-team base offense during training camp and was expected to be a contributor for the Vikings in two tight-end sets along with second-year tight end Kyle Rudolph.Frazier said Carlson's MCL wasn't torn, but the severi...
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