Former Wildcat Rajon Rondo has reached an agreement in principle on a contract extension with the Boston Celtics, according a Yahoo! Sports report by Marc J. Spears.The deal is worth a reported $55 million over five years.”As much as we were willing to wait his contract out, the Celtics stepped up to the plate to meet the original request,” said Bill Duffy, Rondo’s agent. “This is a really fair contract. We wanted him to be paid like one of the top five point guards around. It also allows the Celtics to maintain continuity to continue to be one of the best teams at this time.”Rondo, already an NBA champion, put together his best year of his career last season, averaging 11.9 points, 8.2 assists and 5.3 rebounds per game. The former UK point guard was reportedly being shopped around in the offseason and was going to become a restricted free agent at season’s end, but Rondo was surprised late Sunday night with a deal from general manager Danny Ainge.Rondo played two seasons in Lexington, averaging 11.2 points and 6.1 rebounds in his final season.