Mr Putin needs a predictable factor in the White House; he needs Hillary Clinton in the White House. In any negotiation where Mr Putin can achieve an advantage, he needs the person across the table from him to be smart enough to know when their backs are against the wall; when they are facing checkmate.
Donald Trump is too inexperienced, too dumb, too arrogant to ever admit when he has been outmaneuvered. Who the hell wants an adversary that you like? You want one that you know and respect.