Ramaphosa has also sought to explain the appointment of Michael Hulley‚ a private attorney‚ to act in Zuma's defence - saying that the State Attorney was not asked to act because of fears of perceived "conflict of interest".
He has told the Democratic Alliance's lawyers that then prosecuting head Menzi Simelane‚ Justice Minister Brigitte Mabandla‚ State Attorney Aletta Mosidi and State Law Advisor Enver Daniels all agreed that Zuma was entitled to legal representation under the State Attorneys Act.
But the DA is unhappy with the response and is expected to lodge an urgent court challenge to Zuma's legal funding in the coming days.
Ramaphosa has already stated that he must continue to honour the Zuma fees deal until such time as it is set aside by a court.
He said the Presidency would seek costs estimates from Zuma's lawyers about "how much they require in order to render their services to Mr Zuma in the criminal trial".
"In turn‚ the office of the Presidency will seek to ensure that such estimated costs are reasonable and budgeted for."