49ers sign De'Vondre Campbell. Panthers add K'Lavon Chaisson for pass rush. Rams add Kam Curl, a versatile safety. Patrick Mahomes gains Marquise Brown in Cheifs. Keenan Allen traded to Bears. Arik Armstead signs $51M deal with Jaguars. Browns add Devin Bush at linebacker position. Falcons add speed with Ray-Ray McCloud. Sam Howell traded to Seahawks. Jaguars close to signing Arik Armstead. Dolphins get upgrade with Kendall Fuller at CB. Cowboys re-sign Jourdan Lewis