Business

Coliseum demo plan joins mix

Bruce Ratner is facing some surprising opposition in his bid to renovate Nassau Coliseum.

Long Island developer Ed Blumenfeld is expected to unveil a rival $200 million plan today that calls for the demolition of the 41-year old building, The Post has learned.

Blumenfeld plans to build a much smaller arena, in line with the Nassau County’s plans, along with an adjoining convention center, several sources said.

Ratner, the builder behind the Barclays Center and the Atlantic Yards project in Brooklyn; the Madison Square Garden Co.; and Bayville developer Bernard Shereck have each followed the bidding guidelines and submitted plans for renovating the arena by reducing seats from 17,686 to roughly 10,000, sources said.

Nassau County Executive Ed Mangano has formed a 17-member business advisory council that will be holding a public meeting today to consider the plans. The county wants to choose a winner by June, a source said.

Ratner has been advising the county on how to make its aging arena profitable and is considered the favorite.

Already, Ratner has convinced the New York Islanders, which are currently in the Stanley Cup playoffs for the first time since 2007, to move to Brooklyn by as soon as the 2014-15 season.

Blumenfeld, sources noted, feels the building is too old to renovate — and that it will be hard to attract a minor-league sports team without a modern 10,000-seat arena.

The Long Island developer plans to privately finance construction and to share 20 percent of the net profits, sources added.