The Rams signed Williams to their active roster close to a month ago, but it appears as though they prefer their other options at wide receiver.
Williams, 26, is a former third-round pick of the Titans. He spent the first four seasons of his career in Tennessee before he signed a one-year contract with the Dolphins back in April.
However, Williams was unable to make the Dolphins final 53-man roster coming out of the preseason and was ultimately released. His best season came in 2011 when he recorded 45 catches for 592 yards and five touchdowns.