The centre-back signed his deal ahead of a game that sees fourth-placed County host their third-placed neighbours in the Clydesdale Bank Premier League, with both sides looking to extend their advantage in the race for a top-six place.
County go into the game unbeaten in nine fixtures while Inverness lost only once in 21 games earlier in the season. And Butcher is delighted to be going into the game with football in the region in such good health.
Butcher said: "Gary Warren has signed a new two-year deal. We are delighted because he is an important member of a very strong defence and he is playing the best football of his career.
"Apart from the Dundee United game when he was suspended, he has played in every minute of the previous 34 matches.
"He has got six goals as well which is impressive for a defender. He's a first-class defender and is improving all the time.
"I think it sends out a signal to a lot of people, if you come up here, see the place, play football for us, you'll soon come to love the place. You will enjoy your football and your life as well. One or two others have agreed to sign and we will announce that next week."
Butcher believes both clubs' success this season will have long-term effects.
"You look at the kids playing in the park and they have got a lot of Caley Thistle and Ross County tops on now rather than Rangers and Celtic," he said.
"I think the new generation of kids will follow us and Ross County even more because they regularly see good football and winning teams and to have two teams in the top six is pretty fantastic."