The Green are getting greener. With aging stars Kevin Garnett and Paul Pierce on their way to the Brooklyn Nets and Doc Rivers coaching the Los Angeles Clippers, the Boston Celtics hired 36-year-old Brad Stevens from Butler as their next head coach Wednesday. A source close to the Celtics confirmed that Stevens' deal is for six years and $22 million. Yahoo! Sports earlier reported terms of the contract. The Celtics have scheduled an 11 a.m. ET news conference Friday to introduce Stevens. Stevens' hire drew reactions from players and coaches throughout the league, including legendary former coach Phil Jackson, who tweeted his thoughts. Read more http://espn.go.com/boston/nba/story/_/id/9448871/brad-stevens-hired-boston-celtics-head-coach