Manchester United’s Kobbie Mainoo is heading to Euro 2024, but where does he rank among the best teenagers in the competition? Last season more than most, it was apparent at Manchester United that youth prevailed. Alejandro Garnacho, Rasmus Hojlund, and Mainoo, were all electric in red. Mainoo was the biggest shock, having been relatively unknown by many going into the 23/24 campaign. Now, he’ll head to Euro 2024 with his country, in the hopes of bringing football home. The stuff of dreams for the teenager. So how does he fare against the other teenagers heading to Germany? Here is where we ra…