Here’s a potentially troubling story for Mets fans from CNBC this afternoon. It seems team owner Fred Wilpon (pictured) and his associates might have unwittingly lost a whopping $300 million or more as part of a $50 billion — that’s right: billion — Ponzi scheme by New York investment manager Bernard Madoff that was uncovered by the feds this week. We’ll have much more on this in Saturday’s edition of The Post. 6:20 P.M. UPDATE: The Mets released this statement late today: “This news does not affect the day-to-day operations and long-term plans of the Mets organization and the Citi Field project.” Of course, we shall see about that.