Arsenal will be hoping Barcelona win the Champions League this season as they will be due a windfall of €3.8m if they do so, reports Spanish newspaper Sport.
Barcelona will contest the final against Juventus at the Olympiastadion in Berlin on June 6 and will be favourites to lift the big eared trophy.
Should they succeed, the first thing they will do is celebrate wildly, but the second thing they will do is cut a fat cheque made out to Arsenal Football Club.
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Arsene Wenger shrewdly entered a clause into the deal that saw Thomas Vermaelen join Barcelona that said if Barcelona win this season's competition they would be due a payment of around £2.75m.
That will add to the £7.25m initial payment that Barcelona made, bringing the total to upwards of £10m.
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The payment will be all the more sweeter for Arsenal fans as Barcelona could not have signed a worse player if they had tried.
Arsenal's former captain has spent the entire season getting to know the Nou Camp medical team and, rather remarkably, is yet to make his debut.
Vermaelen has now returned to full training and has been tipped to make his debut should Barcelona seal the title with a game to spare.
However, the Belgium international has a lot to prove to win over some very sceptical Barcelona fans.
Arsenal and Barcelona can't boast too many connections, but they certainly seem to have it in for each other when the transfer window opens.
The Catalans signed three players from Arsenal between 2011 and 2012. Cesc Fabregas, Alex Song and Vermaelen all made the move and have all failed to hit the heights they reached at Arsenal.
Previously they have also taken the likes of Thierry Henry, Marc Overmars and Emmanuel Petit as well.
But Arsenal have certainly had their share of Barcelona players as well. Fabregas was famously nabbed from La Masia and a similar path was later trodden by Hector Bellerin and Jon Toral.
The former is currently a star of the Arsenal first team while the latter has had a successful season on loan at Brentford.
Wenger is played as something of a child catcher in the Catalan media and will no doubt be very aware of any of Barcelona's emerging talents.
Who has got the best out of this war of business, Arsenal or Barcelona?
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