Newcastle did not immediately respond to a request for comment.
England international Burn was taken to hospital after sustaining the injuries late in the first half, manager Eddie Howe said after the match.
"He was struggling to breathe at half-time. I think it's a real problem," Howe had told reporters.
Newcastle, 12th in the table, host Fulham in an EFL Cup quarter-final on Wednesday, before continuing their Premier League campaign at home against Chelsea on Saturday.