That leaves United a little short at full-back and in need of some extra squad depth.
And the club have now turned attentions back towards PSG right-back Thomas Meunier, reports Le Parisien.
The Belgian is currently out of contract in the summer but is expected to see out the rest of his deal at the Parc des Princes.
Two other Premier League clubs are also said to be interested in the 28-year-old.
Crucially, he can also play on the left side of defence, as Young did so many times over the past few years.
Juventus, Inter Milan and Bayern Munich are also said to be monitoring the situation.
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