Manu was originally left off the list announced by coach Daniel Anderson due to a clerical error at the Rugby Football League and has received an apology for the omission.
"Sincere apologies to Willie Manu of Hull FC," Anderson tweeted. "Original selection in Exiles' 30-man squad for 2012."
Manu is one of 10 survivors from the team that beat England 16-12 at Headingley in the inaugural one-off game last June and the only selection from Hull this year.
The biggest representation comes from Catalan Dragons, who had no players selected last year after Steve Menzies pulled out.
The form of Trent Robinson's double-chasing team this year is reflected in the call-up of Clint Greenshields, Lopini Paea, Louis Anderson, Darryl Millard, Scott Dureau and Setaimata Sa.
This year there will be two games, starting at St Helens' Langtree Park on Saturday, June 16, and because there are no Super League fixtures that weekend, the coach is no longer restricted to choosing a maximum of three players per club.
St Helens and Wigan provide 10 players between them, while Warrington have four representatives. The squad, drawn from 11 different Super League clubs, can boast 250 international caps and 30 Origin appearances between them.
The second match will be held at Huddersfield's Galpharm Stadium on Wednesday, July 4.
Anthony Laffranchi, Francis Meli, Lance Hohaia, Tony Puletua, Sia Soliola (all St Helens), Antonio Kaufusi, Michael Robertson (both London Broncos), Brett Delaney (Leeds), Brett Finch, George Carmont, Thomas Leuluai, Jeff Lima, Pat Richards (all Wigan), Brett Hodgson (capt), Trent Waterhouse, Joel Monaghan, Michael Monaghan (all Warrington), Clint Greenshields, Lopini Paea, Louis Anderson, Darryl Millard, Scott Dureau, Setaimata Sa (all Catalan Dragons), David Fa'aologo, Jason Chan, Luke O'Donnell (all Huddersfield), Heath L'Estrange (Bradford), Jake Webster (Hull KR), Joel Moon (Salford), Willie Manu (Hull).