“When you play for Man United, I think that’s a test that’s good enough and difficult enough.
“If you can handle playing for Man United, then you can handle playing for any team and Mason’s got the qualities that not many others have.
“So he could play for England full team or Under-21s, I don’t really mind.”
United return to action against Aston Villa in the Premier League on Thursday (8.15pm).
Solskjaer’s side trail Chelsea by two points as they fight for a place in the top four and Champions League qualification.
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