Bradford City loanee Paul Mullin says the recent lack of opportunity at parent club Wrexham has been difficult to take.
Mullin was Wrexham's leading man during the first two promotions under the ownership of Ryan Reynolds and Rob Mac, but the 31-year-old found himself on the sidelines for much of last season as they went up to the second tier.
He spent the first half of this campaign on loan at Wigan Athletic before signing for Bradford in the January transfer window.
"It's something I've found quite challenging over the last 18 months. It was sort out of the blue, after everything that I've done and then getting surgery," Mullin said.
"I'm never going to accept it, what happened, because it's something that I find quite tough, but that's football and you move on.
"I've got an opportunity now at a massive club to be successful here and write another chapter in my career.
"I just want to play games and be successful. I don't really feel like I've got anything to prove."
Mullin started up front in Saturday's 2-1 defeat at fellow League One promotion hopefuls Luton Town.
