Jack Wilshere has stoked the friendly fires between Arsenal and Tottenham Hotspur - making a bet with his Twitter followers in the name of charity.
The England international midfielder has missed the start of the season through injury, and isn't expected to return to first team action at the Emirates until January at the earliest.
That hasn't stopped the 19-year-old from placing a wager with Spurs fans who follow him on Twitter though, with all funds raised going to either the Jack Marshall fund or an unspecified charity.
"All Spurs fans are buzzing they are ahead of us in the league. It's a marathon, not a sprint," he tweeted.
"At the end of the season if Spurs finish above Arsenal I will give 3,000 pounds to charity and if Arsenal finish above Spurs every Spurs fan that follows me must send me a pound which I will send to charity."
Whilst the wager was done in good-faith, it's quickly gained wider interest in the British media, with Arsenal boss Arsene Wenger questioned on the matter ahead of tonight's Champions League tie against Borussia Dortmund.
But the Frenchman was more than happy to see the benefits of a friendly rivalry, with Wenger glad charities will benefit but hopeful Wilshere will not have to spend a penny of his own cash.
"He made a contest. The good thing is a charity will get some money," the Gunners chief told ESPN.
"If we finish above Tottenham he said the Tottenham supporters have to spend £1 each, so because they have many I hope the charity gets a lot of money!
"I hope Wilshere won't pay anything! We are ready for a challenge, and hopefully the charity will get some money - but not from us!"