Sep 23, 2009 4:51 PM EST

The Marlins plan to offer pitcher Josh Johnson a multiyear contract this winter.

Johnson, who will be eligible for free agency in 2011, would reportedly be open to a four-year deal worth around $50 million.

However, the Miami Herald writes that it would be surprising if the Marlins offered Johnson that much money over the life of a new contract.

If he doesn't sign an extension, "our expectation is he will sign one of the two or three biggest free agent contracts ever for a pitcher," agent Matt Sosnick said.

Via Miami Herald