Bruno Fernandes, Vincenzo Grifo, Nabil Fekir, or if you want to spend more money on a surer thing Naby Keita, Emil Forsberg or Memphis Depay. As it stands, Bruno Fernandes is already off to Sampdoria, Vincenzo Grifo just got signed by Borussia Monchengladbach, Depay isn't for sale and Red Bull have enough cash that their players probably aren't leaving for cheap fees. So we missed on the best deals already. All of those players though would be better paid at Spurs, and all except the Red Bull players would also be moving up to a Champion's League-level club. So, those would be my starting point.