Gray will be a good player, but it begs the question whether Spurs are buying players to win now or as investments to sell on later.
Gray was/potentially is in a select group of highly promising youngsters. There’s lots of potential out there but very few who have the attributes to step up early in their careers. Gray was a very worthy investment but it will take time for him to excel. Look at Bergvall, he’s grown massively this season whereas Gray has had to spend most of his time playing at centre back, a position he’s not used to and he’s only played in central midfield towards the end of the season and in a drastically weakened line up.