The Bulgarian international was a consistent scorer for the Bhoys before deciding to try his luck in the Premiership for the "rst time with his former Celtic boss, Martin O'Neill.

"It's not a big thing for me that I haven't scored yet, " Petrov said. "I've certainly been close a few times but as long as the team are doing well, it doesn't matter who scores.

Of course, it can be frustrating when the ball doesn't go in for you but really it's not about me. It's about how we perform as a team. That is not worrying me."