User blog comment:Roranoa Drake II/Chapter 874: The Baum Goes Ablaze/@comment-25400375-20170805002630/@comment-25400375-20170806191327

Now that it's been confirmed Faust of the Hawkins Pirates is a Mink, perhaps he's the reason the Beasts Pirates found Zou, depending on when Kaido confronted them and regardless if he was forced to help or not. Personally, I'd go with forced, but it remains to be seen.