The 18-year-old midfielder hit a stunning brace on his full league debut at the weekend in the win over Sunderland.
"Today we are big losers," Kindermans to Sky Sports News.
"Adnan was a nice player and technically, very very skilled, very intelligent on the pitch - a hard worker, but a silent worker.
"There are 12, 13, 14-years-olds who have earrings and special hair, but Adnan was a nice quiet boy and when I see him now playing for Man United, he has not changed."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball