When you get to 16 at Barcelona, it's the age that you sign your main contract. I was about to sign that, but we knew there were a lot of other options because you always get them from other teams at that time. I didn't have the option to come to Arsenal until I was right about to sign with Barcelona.
Having Neymar at Real Madrid would be a huge pleasure. Madrid have to do everything to sign the best players in the world and his past at Barcelona would not be a problem.
When United play at home, they get some advantage that other teams don't get. I think when you go to United, Madrid, Barcelona, or Milan, when the referees referee these kind of games, it's always difficult to go against these kind of teams.
Barcelona, Real Madrid, City - there are many teams you'd want to play against.
Barcelona or Real Madrid, I think I would say yes to playing for these teams.
I like a lot to watch Real Madrid and Barcelona, which are my favourite teams in La Liga.
Spain have got a big influence from Real Madrid and Barcelona, and when you watch Spain play, it's almost like watching Barcelona or Real Madrid at times.
I always say that I need competition, and I need competition every week, and in Spain, I was at an amazing club, but I had four matches a year: Barcelona v Real Madrid, Real Madrid v Barcelona, and after that, we'd win 4-0, 5-0, 4-1, 6-1.
Bayern is one of the best teams in the world - on a par with Real Madrid and Barcelona. A move to Barca or Real wouldn't have been a step up for me.
If you are the coach of Bayern Munich, Barcelona or Real Madrid, the chances to win something are huge. When you go to the Premier League, you have six, seven, eight teams who are fighting to win.
I don't think Madrid would be Madrid without Barcelona and vice versa.
I still have a thorn in my side at not having played for Real Madrid or Barcelona, because playing there is a dream for every player. But I consider myself very satisfied to have played for the best teams in Italy.
You want to play in the best stadiums against the best players - your Real Madrid's and Barcelona's - you want to play those teams.
When we are little, we always dream, and the first teams that come into your head are those on the world stage for their marketing, their image, their publicity. That makes you dream about how nice it would be to play for Real Madrid, to play for Barcelona.
Many great teams have players who have come through the youth system or have been at the club for a long time as their captains. I'm thinking of Steven Gerrard at Liverpool, John Terry at Chelsea, Raul at Real Madrid, as well as Puyol at Barcelona and Gary Neville at Man United.
I admire Arsenal and the philosophy that the young players have. Liverpool, with their Spanish players, they also have an incredible squad. And Manchester United and Chelsea are teams that are very big, like Real Madrid and Barcelona, with money and incredible players.