Negotiations are set to resume between The Boston Globe's largest union and management over $10 million in contract concessions the Globe's owner says it needs to keep the newspaper open. The two sides are scheduled to meet again Monday following two marathon negotiating sessions last week. Two weeks ago, members of the Boston Newspaper Guild narrowly rejected a new contract that called for an 8.3 percent wage cut, unpaid furloughs, benefit cuts and the elimination of lifetime job guarantees for about 190 staffers. The Globe's owner, The New York Times Co., then imposed a 23% pay cut to reach the $10m. in annual cost cuts. The Guild filed an unfair labor practice complaint with the National Labor Relations Board.