The worldwide friendly, set to take place on November 15, has been dubbed The Wayne Rooney Foundation global and some of the proceeds from the game will go towards the Manchester United great's charity.
It was also confirmed that the 33-year-old would not wear his usual number 10 shirt and would not captain the side. "We have to balance with the under-21s as they have got a competition next summer and the more we move them up the less enthusiastic they are about moving back down, at times, so the players we have moved up we wanted to look at".
Ryan Giggs has backed the shock England return of former Manchester United colleague Wayne Rooney by applauding it as an opportunity to recognise an "iconic player".
"There are players who have either been with us who I feel need to play to make sure they feel valued".
Rooney was one of 28 players selected Thursday (NZT Friday) by Southgate, but the former captain will not play on November 18 against Croatia in England's final Uefa Nations League game.
The England boss also pushed back on the idea that Rooney's inclusion devalues the earning of an global cap, saying the value of of a cap is a hard concept to pinpoint. Wayne is one the greatest ever players to play for England, the greatest goalscorer to play for England, so why not give him the send-off he deserves?
I played in games where we changed the whole team at half-time.
The 33-year-old, who now plays for DC United in Major League Soccer, has not represented the Three Lions in nearly two years and the decision has been met with varied responses by players past and present.
Although these plans are bound to come in for criticism, England defender Kyle Walker has defended them: "I think it is good".
Kane has scored 19 times so far in his England career - 34 goals shy of Rooney's current record of 53, but was non-committal on whether he has an eye on surpassing that tally.
Giggs, who played with Rooney for a decade at Manchester United, commented: "I understand it".
Fletcher has said that it became clear quite early that Rooney would go on to become a United great, with the only fear being that the likes of Madrid would attempt to take him from the English giants.