Defensive coordinator Mike Nolan and the Broncos have agreed to part ways, and a source told ESPN.com's John Clayton that Nolan is close to an agreement to take on the same role with the Miami Dolphins. Before the split, Miami sent in a request for permission to interview Nolan, sources close to the situation told ESPN NFL Insider Adam Schefter. The parting was friendly and gave Nolan a chance to move on and talk to the Dolphins, the source told Clayton. The Dolphins fired defensive coordinator Paul Pasqualoni and have struggled to find a quick replacement.