The soup is about to hit the fan at Campbell’s.

The struggling canned-food giant is expected to announce this week that it doesn’t plan to sell itself to a strategic buyer — a move that could provoke billionaire Dan Loeb into waging a nasty proxy fight against the company’s board of directors, sources told The Post.

Campbell, owner of the Swanson, V8, and Pepperidge Farm brands as well as its namesake soup brand, will announce the results of a three-month board review on what direction the company is taking when it reports fiscal fourth-quarter results on Thursday.

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