George Kittle is going to be out three-to-five weeks, according to NFL Network's Ian Rapoport. He could be placed on Injured Reserve, which would force him to miss four weeks before being allowed to return.

Kittle sustained the injury during the first half of San Francisco's Week 1 win over Seattle. He exited the game at that point and was slated to undergo and MRI on Monday. Prior to getting hurt, Kittle had already caught four passes for 25 yards that included a 5-yard touchdown that gave the visitors a 7-0 lead.

Kittle will miss "a few weeks." Injured reserve is a possibility, which would force Kittle to miss a minimum of four ga