Getty Head coach Kyle Shanahan of the San Francisco 49ers. Free agency is open and the San Francisco 49ers are already bracing for significant losses. ESPN’s Adam Schefter dropped a blunt assessment on The Pat McAfee Show Monday morning, making clear that one of the team’s most important offensive weapons is likely heading for the exit. And that is before getting to the Trent Williams situation, which adds another layer of uncertainty to an offseason that is already shaping up to be one of the