Leach's style may not be a fit for a lot of major programs who may be too gun shy to take a chance on his system. Radical changes that don't work right off the bat can make a fan base go, "WTF were you thinking?"
(See Auburn University 2008)
(See Meeeechigan 2008, although the jury's still out)
However, I believe there are enough big name schools out there that would pony up the cash for Leak and I'm sure he's heard from plenty of them. I'd tell TT like my smallish but quite hairy nut sack.