"We need to have a constructive and genuine consultation within the shareholder base - not impose a solution developed by just two of our farmers," Wilson said.
"I want to hear the opinions of all of our farmers on this critical subject," he said. "Then board and Council will develop a proposal to be put to the vote," he said.
"This is not something to be developed on the back of an envelope," he said.
Fonterra has named six candidates for its board at next month's election.
Wilson, and fellow directors Blue Read and Nicola Shadbolt are retiring by rotation and are eligible for re-election.
The new candidates are Murray Beach, from Marlborough, Greg Maughan (Marton), and Ashley Waugh (Te Awamutu).
The election, which will be by post, fax or internet, will take place from October 31 through to November 23. A result will be known by the time of Fonterra's annual meeting on November 25.