Starting guard Jalen Brunson hasn’t informed Dallas’ front office about where he plans to sign in what’s become a head-to-head pursuit between the Mavericks and the New York Knicks, a source told The Dallas Morning News on Tuesday. But the source said the Mavericks expect Brunson will choose the Knicks — and their family- and stardom-related perks — when the league allows players and teams to start verbally agreeing to new contracts at 11 p.m. Thursday.