Each report cites the close relationship between owner Mark Davis and Gruden, who had coached the team from 1998 to 2001.
A longer list of possible candidates, from Bill Williamson, includes Denver coordinators Jack Del Rio and Adam Gase.
According to Jay Glazer, the Raiders have indeed fired head coach Dennis Allen.
A premature tweet by an AP reporter caused a bit of a stir on Sunday night, but its message - that Allen had been canned - proved only to be a day early.
The Broncos will have weakside linebacker Danny Trevathan back in the starting lineup for Sunday's game against the unbeaten Cardinals.
Denver's leading tackler in 2013, Trevathan suffered a fracture below his knee during training camp.
With their seemingly annual early season tease over, the Bills have turned their offense over to Kyle Orton.
Coach Doug Marrone benched 2013 first-rounder E.J. Manuel after the team's second straight loss.
An anonymous law enforcement official says he sent the Ray Rice elevator video to the attention of NFL security director Jeffrey Miller in April.
The report is a followup to the AP story which asserted a woman at the NFL had acknowledged having received and viewed the now infamous video.
Within it, the team reasserted that Rice had misled them, coach John Harbaugh denied seeking Rice's release, and owner Steve Bisciotti downplayed his relationship with Roger Goodell.
Shortly thereafter, Bisciotti held a rambling presser, during which he suggested that all of ESPN's sources were friends of Rice's.
Owner Pat Bowlen has indicated a strong desire to keep specifics of his estate planning private, and the Denver Broncos intend to honor his wishes.
Another bombshell has landed on the NFL and Baltimore Ravens over the Ray Rice case, this time via ESPN's Outside The Lines.
Included within ESPN's report are the following points:
5.5 weeks after he fractured his leg, Danny Trevathan made a limited return to practice on Friday.
The official word is that Trevathan is a gametime decision for Sunday's SB matchup in Seattle.
But Jeff Legwold says Denver's leading tackler from last year will continue to rest through the bye week, and return for Denver's Week 5 game against Arizona.
After his first day back with the team following his reinstatement, Wes Welker admitted the extra time off aided the recovery from his latest concussion.
Welker says he's "sharp and ready to go," but he and others are playing coy about whether he'll suit up in Seattle.