Watford striker Richarlison admits the sacking of manager Marco Silva upset him.

Richarlison concedes he was close to the Portuguese coach.

"He helped me a lot at the start," he says. "He is Portuguese so it was easy to communicate. He could explain things to me as I was adapting.

"He always told me that in order to succeed in the Premier League, you need a high level of physical fitness and good positional sense. Those are the things I have worked on very hard on a daily basis."