Manchester United striker Odion Ighalo insists he doesn't care about his detractors after he scored a brace against Derby County on Thursday.

The Nigerian's efforts helped United book an FA Cup quarter-final against Norwich City.

Some have doubted how the 30-year-old would fare at Old Trafford, but the man himself couldn't care less.

"I am happy. I want to congratulate the team for a hard fought game," Ighalo told BT Sport post-match.

"As long as my team-mates believe in me, the boss believes in me and the fans believe in me, I just have to keep going. I don't care what anyone says."