The Brazilian goalkeeper claimed he was 99 per cent certain he would be hanging up his gloves at the end of last season, but that the Hornets convinced him otherwise.
He told Voetbal Primeur, "Last year I was sure that I was going to stop.
"Not because I was not fit anymore, but because I was mentally tired. We reached the cup final against Manchester City, but we lost it. I had it again the hunger to play. If I had to go to another club, I would have stopped. Watford said: no, we want you to stay longer."