WASHINGTON, D.C. – The Redskins traded for a quarterback coach Ron Rivera is plenty familiar with. Washington on Monday acquired Kyle Allen from the Carolina Panthers for a fifth-round pick and traded cornerback Quinton Dunbar to the Seattle Seahawks for a fifth-round pick, according to a person with knowledge of the moves. Rivera coached Allen with Carolina the past two seasons before being fired. The Panthers signed Allen as an undrafted free agent out of Houston. When that didn't materialize, the Redskins traded him and could turn to Kendall Fuller in that role after bringing him back on a multiyear deal.