Wayne Rooney has confirmed that Derby County’s Krystian Bielik has suffered damage to the anterior cruciate ligament in his right knee.

The 23-year-old Poland international was injured in the first half of Derby’s 1-0 home win over Bristol City on Saturday.

Bielik underwent a scan on the injury on Monday, where the extent of the damage was confirmed.

The midfielder will undergo the required treatment to begin his rehabilitation work once he has seen a specialist and will be out of action for a significant period.

Rooney told RamsTV after Wednesday night’s game at Rotherham: “Krystian has done his ACL again, which is sad, and we are all devastated with that news.

“He will have a long time to come back now, but he knows what to do. He has been there before and we will give him every bit of help we can for him to come back stronger.”

He added: “It is a blow to everyone at the club, but more importantly a blow for himself. He came back into the team in December and did really well. He was giving himself a great chance of going to the European Championships in the summer with Poland.”

Bielik has made 13 appearances in the current season, scoring twice, while he has made 33 appearances in total since joining the club from Arsenal ahead of the 2019/20 season.