"My suspicion is that he has made it up but the ball is absolutely in their court now."
Mr Goff said that in accordance with procedures over the release of old Cabinet papers, Labour had written to the Cabinet secretary saying it had no objection to any of the 10 papers being released.
Former Agriculture Minister Jim Anderton also drew up Cabinet papers on the issue and has no objection to them being released.
Mr Goff's colleague David Parker yesterday tried to table two old Labour Cabinet documents in Parliament, but ministers Steven Joyce and Simon Bridges objected on the grounds that it was not the proper process to have such documents released.
Requests for the old papers are being handled by the Ministry of Foreign Affairs and Trade and the Ministry for Primary Industries.
Foreign Minister Murray McCully, who promoted the dispute settlement, has been in the Middle East this week and out of the firing line over the "agrihub" settlement.
The deal comprised a $4 million payment for a combination of settlement of the dispute and establishing a breeding farm in Saudi Arabia; plus $6 million for New Zealand Trade and Enterprise to contract the delivery of New Zealand agricultural services at the farm to build a stronger presence in the region.
Mr Goff said it was hard to understand how it was going to work.
"I'm keeping a partially open mind on it - it just looks like a cover for passing across $10 million or $11 million to the unhappy private investor," he said.
He said it was legitimate for a foreign minister to unblock any obstacle "but if you are going to do that, you have to be very careful indeed".
The way the Saudis operated was different from how things worked in New Zealand.
"Their system does not have the ethics of our system.
"Their system is 'If it's my cousin that's got a problem, you fix his problem then I'll give you what you want'."