Warnock says he is open to all possibilities at the end of the season and has not ruled out taking charge at Aston Villa.
"I've said all along I have got 14 games at Rotherham and I just want to concentrate on that, but after that you look at everything," he told talkSPORT. "You don't rule out anything. I don't write off staying, retiring, going somewhere else.
"I just love the Championship. I now know that is the level I am at and I enjoy. I like the determination of the players and the crowd.
"I would never say no to anything. Having said that, they [Villa] are a big club and I am sure they will be inundated with top quality people."