The sale of the shrinking business was first announced in April as part of an overhaul of sparked by February's surprise takeover approach by Kraft-Heinz (KHC.O).
"We expect to run this in the autumn of this year, and we hope to have a view on agreeing a binding deal by the end of the year or perhaps shortly after that," CFO Graeme Pitkethly said at a conference hosted by Deutsche Bank on Thursday.
"If we are unable to achieve sufficient value in an outright sale, we do plan to demerge this business, and that might take a little bit longer."
Pitkethly added that the review of Unilever's structure, also announced in April, would be completed by the end of the year. He said the review was undertaken with a view to unifying the structure of the company, which has headquarters in both Britain and the Netherlands.
Such a move would provide greater strategic flexibility for potential demergers, such as the spreads business, or for a more transformative acquisition should that become desirable, Pitkethly said.
Reporting by Martinne Geller; Editing by David Goodman