Manchester United fans have made their feelings clear after watching Kobbie Mainoo’s performance against Newcastle at Old Trafford on Wednesday evening. Kobbie Mainoo has had a remarkable campaign at Manchester United and the 19-year-old Red Devils midfielder has thrived in the first-team squad. The England international has become a pivotal midfield figure under manager Erik ten Hag, who has been impressed with Mainoo’s development at Old Trafford. Mainoo’s breakout season has led to rave reviews on the youth academy product, with the United star also earning his England debut back in March. …