10 years plus...
He is at his dream job. He is home. Unless he is forced out in a Tressel like way, he will retire at Ohio State. He is a Buckeye through and through. He clearly loves his job and he clearly is surrounding himself with assistants to take on more than they did in his past gigs.
He will go down in Buckeye history as their best coach ever. It's astounding to see what he has done in 3 short years.
Started his career at OSU going 24-0
Won the division 3 times
2 B10 title games
1 B10 title
1 Orange Bowl appearance
1 Sugar Bowl win
1 National Title
...and the talent keeps rolling in, both in the way of players and coaches. He will be there for a long time...