The companies said a further statement will only be made if and when appropriate.
There has been speculation since at least March that Nutreco was preparing a third bid for Provimi, after the French group was put up for sale by its private equity owner, Permira.
Provimi has also attracted interest from Cargill and China-based New Hope Group. Nutreco attempted in 2002 and 2007 to buy Provimi, but was beaten by private equity groups.