He told Sky Sports: "Once I knew of Fulham's interest there was only one thing on my mind. Obviously I'm disappointed to leave Watford because I've got a lot of fond memories, but this is a new chapter in my life.
"Adrian Boothroyd didn't want me to go, but I knew in my heart it was an opportunity to seize upon. I'm looking forward to the challenge.
"I wouldn't be here if I didn't think they had a chance to stay up."