Build up starts at 6pm on ITV, think it kicks off at 8. Teams:
England
Coaches: Sam Allardyce, Robbie Williams, Peter Reid, Bradley Walsh
Celebrities: Robbie Williams, Stephen Moyer, Jack Whitehall, Mark Owen, Olly Murs, Paddy McGuinness, Jonathan Wilkes, Jamie Theakston, Ben Shephard, John Bishop, Matt Smith, Marvin Humes, Dominic Cooper, Danny Jones
Legends: Jamie Redknapp, Jamie Carragher, Paul Ince, David Seaman, Teddy Sheringham, Des Walker.
Rest of the World
Coaches: Jose Mourinho
Celebrities: Michael Sheen, James McAvoy, Gordon Ramsey, Kevin Bridges, Nicky Byrne, Patrick Kielty, Adam Richman, Jeremy Renner, Santiago Cabrera, Sam Worthington, Mark Salling, Martin Compston.
Legends: Edwin van der Sar, Jaap Stam, Edgar Davids, Alessandro Del Piero, Clarence Seedorf, Andriy Shevchenko.
Pretty sure everyone knows what it is by now but for those who don't, it's a charity football game held at Old Trafford that raises funds for Unicef.