Could Santos help solve Man Utd's midfield malaise?

Chelsea's Andrey Santos is the latest player Manchester United have taken an interest in as they look to address their problem midfield position. With Casemiro leaving after his contract expired on 30 June and Manuel Ugarte expected to be sold, United went into the summer with England's Kobbie Mainoo as their only recognised central midfielder and with the stated aim of addressing the situation as a matter of priority. In the transfer market, United have encountered more issues.