"The one thing I'm most excited about is obviously Philip (Rivers), and the relationship and some of the things we were able to do. "

That relationship is well documented. In fact, last year some in the media speculated the Titans were attempting to trade for the quarterback in the lead up to the draft when he was Tennessee's head coach. Both teams fervently dismissed those rumors as having no merit, particularly the Chargers who insisted they had no interest in trading the franchise quarterback they reached a contract extension with a few months later.

Nonetheless, Whisenhunt is clearly pleased to be reunited with number 17 once again. It's easy to see why as he helped Rivers capture the NFL Comeback Player of the Year award in their lone year together. The QB was a Pro Bowl pick in 2013 after completing a team-record and NFL leading 69.5% of his passes for 4,478 yards, 32 touchdowns and just 11 interceptions for a team-record tying 105.5 passer rating. He set a new franchise record at the time with 378 completions and set the all-time team mark with three 400-yard passing games.

As a result, it's no surprise that number 17 reached out to Whisenhunt early in the process.

"He just sent me a text and asked if I had any interest in coming back. Just kind of feeling me out. I was floored that Philip would take that time, and it really meant a lot to me."