I would be happy with Garner, Johnson, VanGorder, Pagano, or Schwartz.
I'd be happy with Steele, too. Although he's really unhappy in T-Town, I don't think he would leave to come to Auburn. He was all but hired on to be Petrino's DC at Arkansas last year, and somehow Saban convinced him to stay another year. I don't look for him to stay at Alabama after this season though.