Keith Van Horn's stint in Philadelphia likely will be over soon. In a four-team trade, the details of which were being worked out last night, the 76ers will send Van Horn to New York and acquire Glenn "Big Dog" Robinson from Atlanta, an NBA source said.

The other big names involved are Latrell Sprewell, who will jump from the Knicks to Minnesota, and Terrell Brandon, who will go from the Timberwolves to the Hawks. More players, possibly another Sixer, will be included.

Billy King, the Sixers' president and general manager, was in Utah last night for the Rocky Mountain Revue summer league and was unavailable for comment. It is the team's policy not to comment on trade rumors.

Van Horn, vacationing with his family in Utah, did not immediately return a telephone message last night.

No one, including Van Horn, should be shocked. Knicks coach Don Chaney has been outspoken about his love for Van Horn's game, and there was talk between the teams about a deal before February's trading deadline.

Just last week, Chaney denied that another deal was in the works, but he said of the Sixers forward: "It's no secret that I have loved Van Horn's game for a long time."