Might he actually become Sir David?

Well, whatever, but one of these two is wrong about what Posh would end up being called:

A knighthood for the Real Madrid star would make his
former Spice Girl wife Lady Beckham – a title she has made clear she
would relish.

She told the BBC last year: "I’d
love that, that would be quite fabulous. It’s just so camp, it’s
wonderful isn’t it? Lady Victoria… that would be quite amazing."

Lady Victoria just ain’t gonna happen: for that Posh would beed to be the daughter of an Earl (or higher) and it’s a little late to start engineering that. Lady Beckham is possible of course.