Arsenal youngster Marcus McGuane has joined Barcelona on a three-and-a-half-year deal.
The 18-year-old midfielder has made two first-team appearances, in Europa League wins over Red Star Belgrade and BATE Borisov earlier this season.
Barcelona have agreed to pay an undisclosed fee for the England Under-19 international.
Greenwich-born McGuane is a product of the Gunners’ academy, having joined at under-six level.
He has since become a mainstay of Arsenal’s under-23 side but will now be part of Barcelona’s B squad.
Meanwhile, Borussia Dortmund striker Pierre-Emerick Aubameyang arrived at Arsenal’s training complex on Tuesday as his £60m move to the club edged closer.
The 28-year-old is set to undergo a medical, having agreed personal terms with Arsenal, who themselves have an agreement in principle with Dortmund.
However, the German club will only allow the deal to go ahead if they can land a replacement.
That could mean Dortmund signing Arsenal striker Olivier Giroud, but if the Frenchman joins Chelsea instead, they may turn to Blues forward Michy Batshuayi.