Kobbie Mainoo had already started making his number 37 iconic in his debut season at Old Trafford. The 2023/24 season – as bad as it was at times – will always be remembered fondly by Manchester United as it brought the arrival of Kobbie Mainoo with it. The 19-year-old midfielder was stellar in his opening season and instantly established himself as a starter in Erik ten Hag’s squad. He was so good that Gareth Southgate could not resist the chance to call him up into his Euro 2024 squad – where he was also impressive when called upon. But now there might have been a hint that he is in line for…