Why does it matter where they played before? I.e. Dunk got over 100 games in the PL, more than any Villa defender (except Taylor maybe). Why would his PL experience from playing with Brighton count less than i.e. PL experience gained elsewhere?
Their starting lineup is quality, especially the midfield - all of them great, experienced players in their best years. Definitely helps you as a striker.
But I agree, he is good but that goes for Maupay, Connolly and Welbeck as well.