Tottenham Hotspur remain focused on landing Atalanta midfielder Cristian Romero this summer, but should they fail, they are keen to land three cheaper defenses in his place.Spurs, who have already signed Atalanta goalkeeper Pierluigi Gollini on loan, remain in talks over 23-year-old Romero but failed in their opening bid for the Argentine.Romero is the top target / Alexandre Schneider / Getty ImagesThe English side made an offer of € 40 million (€ 34.1 million) plus € 10 million (€ 8.5 million), but Atalanta turned them down…