 José Luis Manzano, a media entrepreneur and former member of the Menem government, was also involved in the negotiations, and both he and Martínez “assured their partners that they had the approval of the Government” to negotiate a deal.Reportedly, Martínez had asked JP Morgan to come up with an attractive offer for the bonds.Specializing in modern and contemporary works, David Martínez has been reported as also owning pieces by Mark Rothko, Pablo Picasso and Damien Hirst.