I'm not going to dox this PlaymakerDavid dude, but its pretty easy to find information on him online. Based on his LinkedIn profile, he definitely has connections within the professional sports world, but its also a stretch to assume (based solely on his LI experience) he has the kind of connections that would be in the know about one of the most secretive FA recruitments of all time. He also definitely also has connections to Vegas and famous poker players (Phil Helmuth looks like an investor in one of the companies he was involved with that was recently acquired for $54m) so maybe that's where its coming from.
But either way, this is not some random dude hiding behind a twitter handle. He might be getting info that isn't correct but I don't know if hes just completely making horsefeathers up.