Honestly, he is immensely overrated. Fans have this habit of glorifying youth. At United our fans try to force young players into our first 11 because they view it as a tradition. But the truth is, young players only get into starting 11's when they are better alternatives to actual starting 11 quality players. Van Persie started for Arsenal when he became legitimately better than Bergkamp. Busquets started for Barca when he was seen as a better alternative to Yaya Toure, but here, regardless of quality or maturity, we try to force players through. We should have bought a starting left back ages ago.
Another thing that gets me is this rejection of loans. We should have loaned out Shaw, Smalling and Jones( 4 years ago) and Rashford, watched them develop in less aggressive environments, and brought them back with experience and confidence, while signing players to progress us further along. Instead we sat on our hands, waiting for these players to develop, but the reality is, player development is not a guarantee. You see this in the NBA every year. Players who get drafted with so much hype, only to have careers far less successful as was expected. Bayern Munich loaned out Alaba and Kroos to Hoffenheim and Leverkusen before bringing them back. They both came back to be mainstays. Chelsea loaned Courtois to Atletico before bringing him back. He came back to be a mainstay. We do not have strong competition for our younger players in the reserves, and we cannot afford to play these young players in such high pressure situations at this stage of their careers. Teams like Tottenham and Liverpool can afford lulls, we cannot. So in order for these players to gain the type of experience that will help them, loans are good alternatives. Loans refine players. Shaw should have been loaned out last season after his leg injury, maybe if he was in a less high pressure situation, he would have recovered quicker and more effectively from his injury. In my opinion, we should also have loaned Rashford out last season, he was not a starting quality player because he had far too many weaknesses in his game. In England, its viewed as a bad thing, some form of exile. But the fact remains that players, especially at the bigger teams are not developing as the should, and maybe loaning them out at ages 19, 20 and 21 would help them develop