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Manchester United left-back Luke Shaw is a doubt for England’s games against Croatia and Spain in the Nations League after sustaining an injury in Manchester United’s comeback win over Newcastle.

The 23-year-old completed the full 90 minutes against Newcastle but complained of a problem after the match.

Shaw will be assessed when the England squad meets up on Monday but it is possible that the injury will see him sent back to Manchester United.

The nature of Shaw’s injury is not yet known.

Speaking after Manchester United’s win over Newcastle on Saturday, Shaw told MUTV: “If I’m honest, yeah, 100% as soon as we came out in the second half… a lot of strong words were said at half-time in the changing room.

“I think everything of what was said was correct, 2-0 down at half time against Newcastle at home is really bad, and it helped us, it helped us and we came out a new side in the second half.”

Shaw added: “At half time, I’m sure there were a lot of happy people loving every moment of it, but the team spirit is very strong.

“The half-time team talk was very strong and it was needed and gave us a kick up the a***, the way we were much better in the second half. Much quicker and more direct and more like the United we saw in the old days and we need to do that more and we will hopefully and we look forward to our next games.”