Third year in a row Valencia is the No.1 RB for me in FIFA 19 EPL. He is fast, strong and with excellent standing tackle. He backs into players and he is able to get the job done! Dont waste your coins on Walker. This guy can clear the ball just as easily and this year he can get some headers for you too. His pace in this new fifa feels great, his passing is really good and his balance is decent.
Those two seems to be the only weaknesses in his game. He doesn't miss much but when he does miss a header due to his height/ jumping is noticeable.