The main factor in joining Arsenal was meeting with Arsene Wenger and to hear what his plans were for me.
I think it's very tough to manage a club like United.
If Jose Mourinho came to Man United, you would think, with his track record, that in maybe three seasons he would be gone. Man United are looking at the next 20 years. They've just given David Moyes a six-year contract. It is that kind of club.
Ajax have a set model, a defined youth programme - Barcelona have one too, and Juventus. And Atletico Madrid do too. Real Madrid don't - because they alternate developing their own players with signing talent.
Everything depends on the club more than the player: the quantities, the paperwork.
When you believe in one player to improve the squad, you have to do everything that is possible for us as a club to sign these players.
If I have an idea of football, and I am the manager, it doesn't make sense for the club to find players with a different profile.
A football club's board of directors' job is to attract and get the best football players and keep them at the football club.
I think you have to refresh the squad every year, and I have done it with all my clubs.
Juventus' supporters called for Conte, however this is not the reason why the club signed him. I can explain it better: fans are obviously very important, but thinking that Juventus managers follow their moods would be wrong.
At other clubs I have been, at Juventus, at Barca, we had two 'ships': one for the domestic league and another for the Champions League.
