Williams, 30, spent seven of his eight NFL seasons with the Chargers. He spent last season with the Jets and Steelers, then rejoined the Chargers on a one-year contract in March.

Yahoo Sports is on the road this summer hitting camps across the country, and we're rounding up the news, updates, position battles and more you need to know.

The Los Angeles Chargers have placed veteran receiver Mike Williams on the physically unable to perform list to begin training camp, per Ian Rapoport of NFL Network.

Mike Williams could warn former Chargers teammate Keenan Allen if a Bleacher Report prediction comes to fruition.