Veteran Saracens flanker Hill, in his last season as a player, admits he would listen to an approach from his former skipper.
He said: "I'm at the stage of my career when I'm very much ready to talk to anyone.
"I have the highest respect for Johnno and of course I would talk to him if he approached me.
"I've only got my level two coaching certificate at the moment which allows me to coach whoever. I may have to get a little higher than level two!"
Hill is preparing for Sunday's Heineken Cup semi final clash with Munster after producing a man-of-the-match display against the Ospreys in the quarter final.
After two knee reconstructions and a host of other associated injuries, the 34-year-old is playing every game as if it is his last.
"The Ospreys occasion and event made all the pain of the rehab and recovery worthwhile not just for me but for the club. It was a big day all round," Hill said.
"You have to approach the Munster game with the same mental and physical approach that stood us in such good stead in that match.
"I'm aware that retirement is close and there will be an emotion around finishing. You just have to put that to the back of your mind until it happens."