The Chiefs have released cornerback David Amerson, according to Brooke Pryor of the Kansas City Star (Twitter link). The 2013 second-rounder was cut by the Raiders back in February. 
Originally drafted by the Redskins, he lasted only a little over two years in Washington before being waived. The Raiders claimed him off waivers and after a strong showing in 2015, signed him to a huge four-year $38MM contract extension.
He lasted just two years of that contract before the Raiders moved on. He drew significant interest this offseason, visiting with several teams before ultimately settling with Kansas City. The Chiefs signed him to a one-year $2.25MM deal.
Despite the Chiefs losing Marcus Peters in a trade to the Rams, Amerson couldn’t take advantage of the opportunity. It appeared the Chiefs were counting on him to start outside when they signed him, but apparently didn’t like what they saw this summer. The fact that he couldn’t crack the weak Chiefs’ cornerback corp isn’t a good sign for Amerson, but he should resurface somewhere else due to his big-name status and strong physical attributes.