His agent says Vydra won't play another season in the Championship.
"I can't imagine him playing Championship again right now," agent Ondrej Chovanec told the Evening Standard.
"We discussed it with the boy and he would like to play with the top players on the top level. It's difficult because he was very happy at Watford, but if you get the opportunity to play Premier League or German Bundesliga would you say no?
"He is the number one Czech international striker and he would like to play the same level competition as Petr Cech is doing."