I'm quite sure England changes numbers every single game depending on the starting XI no? It's some tradition.Since the introduction of of squad numbers Spurs have as far as i can remember never taken a shirt number away from a player. There's been a handful of times when a player has been asked if they're willing to change. Like when Sheringham returned and wanted his 10. Don't think Ade would be up for that though ..
Kane could have been 18 with England, but chose 9 cause he could and is star of the show. Could very well do the same for us