Ex-Chelsea star Joe Cole believes that Angel Di Maria's troubled spell at Old Trafford is a warning to Manchester United match-goers about the perils of jeering Joshua Zirkzee.
Zirkzee was replaced by Kobbie Mainoo just after the 30-minute mark on Monday night against Newcastle. As he left the field, there was audible jeers from some home supporters - followed by a spattering of boos as the Dutch forward made his way to the substitutes bench.
Once there, he picked up a coat and headed to the tunnel before emerging a few minutes later to watch the rest of the match from the dugout.
That was a new low for Zirkzee - in what has been a difficult few months at United - and it was hard not to feel sympathy for the 23-year-old.
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