The 27-year-old is on the verge of completing a return to the Bombonera this summer after successfully thrashing out a deal with los Che for the midfielder
The 27-year-old has been heavily linked with a return to his former club during the off-season and los Che's sporting director, Damia Vidagany, has confirmed the deal with just formalities to sort.
He told Telam: "Gago is no longer a Valencia player. Therefore we will not talk about him anymore.
"Boca made a €1.7m bid for 50 per cent of the the transfer and we accept that. All we need is the offer on paper."
Meanwhile, Boca president Daniel Angelici has confirmed the wheels are in motion to bring the former Real Madrid man back to la Bombonera and expects the deal to be finalised by Monday.
He told Radio 9: We have agreed to Gago's contract and wages. Everything is on track and I believe that he will be here by Monday."
Gago, who rose through the ranks with the Xeneizes, enjoying a prolonged spell with the Argentine giants before departing for Real Madrid in 2007.