Manchester United’s centre-back department has been torn to shreds this season on and off the pitch, so it’s probably priority number one this summer. Amid what has been a disappointing campaign for Manchester United, centre-back is where the biggest problems have stemmed from. Erik ten Hag has barely been able to field anything resembling his first-choice backline this season with injuries to all his top defenders at one point or another. The extent of this problem can be seen right now as only a half-fit Jonny Evans is available to select as a natural option at the back. This has made the de…