The young Spaniard was only 15-years-old when he joined the Gunners from Barcelona.
He said: “Right now I’m fine at Arsenal.
“But I cannot deny that to return and play for Barca would be a dream come true.
“I chose to stay at the club last summer and right now I’m totally focused on the reason for that decision, which was to try and win trophies.
“We’ll see how things have gone by the end of the season.
“But the fact is that Barca are playing ‘cinematic’ football and it’s fantastic to see.”
He added: “It is wonderful to see so many players from the youth system in the team, so well adapted to the philosophy of the club.
“I decided to give my all for Arsenal and I’m not the kind of person to just give up on things just like that.”