Bumble Bee Foods, LLC has received takeover overtures fromThai Union Frozen Products Public Company Limited (SET:TUF) and Post Holdings Inc. (NYSE:POST) in recent months, according to people familiar with the matter. Bumble Bee Foods is set to launch a sale process in the fall amid strong interest from industry players and has appointed an adviser to assist with that effort, the people said. Bumble Bee, owned by private equity firm Lion Capital LLP, is seeking a valuation upward of $1.5 billion, the people said, asking not to be named because the matter is not public.