Did you miss the whole part of the share holder's meeting where the lawyer read Mae's will that gave the Crown & Anchor to Baz and the boys? It's now their establishment. How well they are able to run it might be a plot point though for a future season.

I agree with the Nate theory

I think that the open manager possition that he was talking about was the manager of the women's team. That said, I'm sure that Rebecca would have offered him the Men's team, since she never wanted him to stop, but he had already promised his son he was going to make more time.
I think Nate is a good pick if they're going to put someone into that position we already know, but I have another, much funnier idea. Zava had retired and his wife wanted to live in London, Higgons also suggested a basketball coach from New Zeland before. It seems unlikely, but if it's just going to be a side character why not.