After biding their time, Tottenham Hotspur have now added Dominic Solanke to their trio of 18-year-old signings this summer – a much needed boost. No doubt, Ange Postecoglou will have been delighted to see the likes of Lucas Bergvall, Archie Gray and Yang Min-hyeok arrive, but none of the three significantly raised the level of his first eleven. Solanke, on the other hand, will go immediately into the starting team, allowing Son Heung-min to return to his favoured role on the left. The Englishman is excellent in the press, scores goals, and provides much better balance to Spurs’ squad moving f…