Arsenal captain Martin Odegaard has been one of Mikel Arteta’s finest signings, but he could have even joined a lot earlier. When Odegaard was a teenager, he was the most sought-after wonderkid in football, and every top club was lining up to sign him when he was just 15. Odegaard deliberated over his decision, visiting a number of clubs for trial sessions including Arsenal, before then joining Real Madrid, and he made his debut for Los Blancos when he was 16, coming on as a substitute for Cristiano Ronaldo. A lack of game time stifled his progress for a while, and he ended up on loan at Arsen…