Defence promises to be a central issue for Carrick and Manchester United | Manchester United

Manchester United’s central defender quintet of Leny Yoro, Ayden Heaven, Harry Maguire, Matthijs De Ligt and Lisandro Martínez: an ideal blend of youthful zest and experienced winners or a unit that may prove vulnerable and injury-prone across the long months of the campaign?

In Yoro, Heaven, Maguire, De Ligt, and Martínez, Michael Carrick can talk of high potential and seasoned operators…