Broncos owner Greg Penner and University of Michigan football coach Jim Harbaugh met last week in Ann Arbor to discuss Denver's head-coaching position without any deal materializing, league sources told ESPN.

Although Harbaugh two weeks ago announced he was staying at Michigan, Penner did his due diligence and still traveled to Ann Arbor to meet with the coach in person, like he's done with seven other candidates during the Broncos' head-coaching search.

The follow-up conversations were part of the process for both Denver -- led by Penner with general manager George Paton -- and Harbaugh. The face-to-face meeting came after Harbaugh's initial video interview with Denver, after which he pulled his name out of contention and reaffirmed his commitment to Michigan.

"I love the relationships that I have at Michigan -- coaches, staff, families, administration, president Santa Ono and especially the players and their families," Harbaugh said in his statement Jan. 16. "My heart is at the University of Michigan. I once heard a wise man say, 'Don't try to out-happy, happy.' Go Blue!"

The Broncos moved on as well, continuing their discussions with several other candidates. Denver has interviewed former Saints coach Sean Payton, former Colts and Lions coach Jim Caldwell, former Stanford coach David Shaw, Rams defensive coordinator Raheem Morris, Cowboys defensive coordinator Dan Quinn, 49ers defensive coordinator DeMeco Ryans and their own defensive coordinator, Ejiro Evero.

Harbaugh now has met with the Vikings and Broncos in back-to-back years. While one source wondered how many more chances Harbaugh would get, another league source said "The league is likely to be interested in Jim as long as he is successfully coaching. He's proven at every level including the NFL. That's a hard resume to match."