Billionaire financier and art collector Leon Black and his wife Debra, a Broadway producer and a catalyst behind Melanoma Research Alliance, are reportedly buying 19 E. 70th St., the former Knoedler & Company art gallery, which closed in 2011 after a massive $80 million art fraud came under investigation.

London developer Christian Candy bought the 30-foot-wide, 17,000-square-foot, 104-year-old Italian Renaissance-style Upper East Side townhouse for $35 million in 2013., reports the New York Post.

Candy had obtained permits to return the space into a single family, then listed it at $55 million. The Blacks are said to be negotiating a $50 million offer for the residence.