If there are other reasons to care about tonight's England versus Scotland game than Wayne Rooney, I certainly don't know of any.
At a different time of year - say, not three days before the start of the Premier League - and in a competitive setting, you could present a case for the fixture carrying some of the old Home Internationals' sporting and cultural significance.
But not tonight. All anyone wants to do in an international friendly is not get injured, and you won’t see a clearer example than at Wembley this evening.
So thank heaven for Rooney, whose will-he won't-he drama looks set to enliven the boredom.
Manchester United withdrew him from the Community Shield citing injury.
Roy Hodgson claims the player has been fit for some weeks.
Yesterday Steven Gerrard said he was not 100% but desperately wanted to play. And it looks like he will, though possibly not from the start.
In pre-season I watched a Manchester United game in Japan, in which the TV director cut away to Shinji Kagawa sitting impassively on the bench literally every minute, and often during long passages of play. That's exactly what should happen tonight with Rooney.
There's no other reason to watch.
So why does it matter so much whether Rooney plays?
Perhaps, from an England perspective, it doesn't - the sheer pointlessness of the fixture having already been established.
But for United, and new manager David Moyes, it is an important test of strength.
After the needlessly public pursuit of Cesc Fabregas ended in farce, questions are being asked over Moyes's political savvy.
Never mind that chief exec Ed Woodward appears just as culpable for the ceaseless briefing to media over Cesc - quite simply Fergie wouldn't have let it happen.
And Alex Ferguson wouldn't have let Rooney play for England tonight.
He might have withdrawn him from the squad due to 'injury'; he might have impressed on player and manager the danger of aggravating an existing niggle; he might have reminded Roy Hodgson that with eight United players in the England squad he was a useful man to keep onside in a World Cup year.
Whatever he did, he would have done it while being Sir Alex Ferguson - and his huge influence would have done the rest.
David Moyes isn't Fergie, but he is Manchester United manager - and he could really do without being outmanoeuvred by a big star who wants to leave the club.
Of course in practical terms it matters little whether Rooney features tonight or not. But in his power play with the club it matters a great deal.
This is about showing Rooney who is boss. You work for us; and if you don't want to play for Manchester United you don't play for anyone. Capisce?
Whether Rooney stays or goes, Moyes needs it to look like an outcome of his choosing.
In 2010 Ferguson boiled football management down to two words: power and control.
Moyes needs to show Rooney he’s the one with the power; he needs to show everyone else he’s in control of the player’s destiny.
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