Johnson is a Chelsea fan and makes a special point of studying the performances of England skipper Terry at Stamford Bridge whenever playing commitments permit.
And the former Cardiff man would dearly love to enjoy the same sort of success as experienced by Terry, saying: "John Terry is big for me in terms of watching his game. He is England captain so he can't be doing much wrong."
He added: "He plays for the side I support which helps as well. He is a great player. There are a few I admire but he is the top of the list for me.
"I try and get to as many Chelsea games as possible, mainly Champions League because obviously we are playing at weekends.
"I watch him as much as I can. He has come through the ranks and is now at the top of the tree.
"They don't get much higher than the England captain and captain of your club who are fighting for the Premier League title every year.
"He is a great player and, if I can emulate anything he has achieved, it will be good."