United wanted a midfielder they badly needed if they could bring in a midfielder they would become a much stronger team. Although they offered a hefty sum of €50 million just to cover their need for a midfielder player. But United could not be successful. Casemiro A very good player as a midfielder but he refused because of his love for Real Madrid.
United are also focusing on Ajax winger Antony and are confident that they will get him by the end. With Greenwood absence it seems a great target but Ajax are also not willing to let him go. However Antony wants the move to happen so possible that he might pressure from his side so next few days will be key days regarding this.
Regarding midfielder, they were after De Jong but seems like they have given up the pursuit so apart from Casemiro doesn't seems like another midfielder coming to United.