By Alessandro Schiavone in Prague David Raya spoke to Capital Football, Hayters TV and the Sun in the mixed zone in the afternath of Arsenal's 2-1 win over Slavia Prague on Wednesday. Here is what he replied to our outlet's questions. David, you went from being a decent keeper at Brentford to one of the best in the world at Arsenal. How did you pull it off? "I think it's a little bit of everything. Belief in myself which is very very important. Every day I work very, very har