PayPal's president, David Marcus, is leaving to join Facebook's (NASDAQ:FB) Messenger team, but he will not have control of the company's recent messaging acquisition, WhatsApp.

Considering PayPal is essentially eBay's (NASDAQ:EBAY) core business now, to leave it to run a single unit of Facebook is intriguing. Also, given Marcus' background, it hints that Facebook is making things like money transfers a key way of monetizing communication platforms. That's especially important, because at some point Facebook will need to justify its $19 billion WhatsApp price tag.

In this episode of The Next, Motley Fool tech analyst Eric Bleeker and Rule Breakers analyst Simon Erickson discuss what Marcus' move might mean for a future Facebook payments system.