The teen heartthrob will appear on the British boyband's new record along with Rita Ora and other big names.
The band - whose last album 'Battleground' was released in 2011, have promised their follow-up will be even better now Nathan Sykes has recovered from having emergency throat surgery.
Max added: "Nath's back, so I think it's gonna be our best album yet and hopefully there'll be a couple of surprise collaborations there as well."
The Wanted's latest single, 'Walks Like Rihanna', was inspired by the Barbadian beauty and they recently found out Rihanna had given the track the thumbs up.
Bandmate Tom Parker revealed: "We met her manager, Jay Brown, in New York and he said he really liked it and she really liked it, which is always a good sign cos if she hated it we'd be in a pretty bad place."
But Max added: "We'd put it out anyway! I think she's avoiding us since we wrote that one."