The England international has had a difficult United career and he has been hampered by multiple injuries over the last 16 months.

Mount recently recovered from a hamstring injury to make his comeback, but he will now miss the Porto game with a cut on his head.

The former Chelsea man was a first-half substitute against Spurs last weekend, but he was replaced after the unfortunate blow.

Mount has not suffered any kind of concussion, but United have decided against taking a risk. He will recover in Manchester instead.

In the absence of Mount, there is a surprise call-up for Dan Gore, who captained the Under-21s against Hertha Berlin on Tuesday night.

The youngster has been rewarded with a berth in the squad, but it is unlikely that he will make a competitive appearance tomorrow.

Kobbie Mainoo and Manuel Ugarte are expected to start in central midfield with Bruno Fernandes operating from the number 10 position.

Related

---