Luke Shaw sustained a double leg fracture in Manchester United's 2-1 Champions League defeat at PSV on Tuesday, the club have confirmed.
The 20-year-old was on the receiving end of a thumping tackle from Hector Moreno early in the Group B fixture, subsequently receiving seven minutes of treatment before being withdrawn on a stretcher while wearing an oxygen mask.
And the club subsequently revealed that their worst fears have been realised, with Shaw now set to undergo surgery.
A tweet on United's official account read: "Our thoughts go out to @LukeShaw23, who has suffered a double fracture of the leg. He will have an operation on his return to Manchester."
Unsurprisingly, those sentiments were echoed by Chris Smalling - who captained United on a disappointing return to the group phase of Europe's premier club competition.
Smalling told BT Sport: "I didn't see it. A few of the players did witness it and it was a very sad time. We wish him a quick recovery."
Get the best features, fun and footballing frolics straight to your inbox every week.
Thank you for signing up to Four Four Two. You will receive a verification email shortly.
There was a problem. Please refresh the page and try again.