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Losing one left back might be bad luck, but to lose two looks like carelessness. Yet here we are. According to the Mirror, Marcos Rojo has injured his shoulder in training, and is expected to be out for "weeks". We don't know if those are normal weeks or Arsenal weeks, but he may need an operation, and apparently staff are worried that it might be a repeat of the dislocation he suffered last season.
In the short term, this means Louis van Gaal is going to have to improvise even harder than before. Are we going to see the return of 3-5-2, the inversion of Matteo Darmian, or the square-peggery of Ashley Young? If he's out for more than a month, however, this means only one thing:
That's right. Manchester United have a space in the squad, money in the bank, and January is just around the corner. At a conservative estimate, we reckon that between now and the end of next month, United will be linked with 27 left-sided defenders, from veterans (hello, Ashley Cole) to youngsters (good afternoon, Brendan Galloway). As to whether United will actually sign anybody, well, your guess is as good as ours.