David Wagner admitted it would be a huge blow to lose Hwang Ui-Jo after the South Korean international suffered a suspected hamstring injury in the 3-2 Championship defeat at Watford.

Hwang will be assessed fully by the Canaries’ medical team over the next couple of days after an eventful 17 minutes at Vicarage Road that included a stunning long range strike.

Wagner had backed the Nottingham Forest loanee in recent days with starts against QPR and Watford following sexual misconduct allegations in his private life.

The Korean FA announced earlier on Tuesday he will not be picked for the national side until investigations have been concluded, but Hwang notched his third City goal in five appearances with a swerving finish.

The 31-year-old felt a problem before unleashing a right footed shot, and made way for Ashley Barnes five minutes later.

“It looks like a hamstring injury,” confirmed Wagner, with Norwich next in action on Sunday at Bristol City. “Obviously there will be a scan and then we will see how serious. We must wait to see how serious and what it really means, but obviously you've seen he's in good form. He scored goals for South Korea, scored for us in the last couple of games and before he worked very hard as well.

"I think he now comes back to his best because he has now settled quite well. Clearly it would be a blow if he is injured for a long time but I can almost say we are used to injuries now. We’ve had a lot of experience so far. Let’s assess and then we will see how he will be long he will be injured.

“Unfortunately after the injury of Ui-Jo, and the substitution, I think we were a little bit shocked afterwards, and then more or less with the first shot on target they score out of nothing.

"If another player who is in good form, who scored a great goal and scored the winner three days ago, goes off this affected the group, and afterwards we were not able to continue like we've done.”