Bill Belichick didn’t flinch at a spoiled $5,000 milk delivery — because keeping Tom Brady and Antonio Brown close was worth every drop.

A pricey ingredient bound the early days of Tom Brady’s and Antonio Brown’s friendship. That’s according to former Patriots coach Bill Belichick, who spilled the tea — err, $5,000 worth of milk — when discussing the polarizing wide receiver’s brief tenure in New England on “The Pivot” podcast as part of a promotional run for his new book,