Manchester United boss Erik ten Hag was delighted with Kobbie Mainoo for their FA Cup final victory.
Mainoo scored in the 2-1 win against Manchester City.
Ten Hag said, "He was really so enjoyable to watch. At his age. He's an example. We wanted him to come in and he got a bad injury in pre-season."
"I think we have to keep it calm.
"Here in England you're very good to push players too high and then you hammer them with one or two bad performances."