EVANSTON—Northwestern has agreed to a contract extension with men’s basketball coach Chris Collins.The school did not provide any details while announcing the move on Tuesday.Collins, who replaced Bill Carmody, is 29-36 in two seasons. Northwestern went 14-19 his first season and 15-17 last season.With veterans Alex Olah and Tre Demps along with sophomores Vic Law and Bryant McIntosh returning, the Wildcats appear poised to contend for the school’s first NCAA tournament bid.