Millwall forward Aiden O’Brien defended the club’s fans who were criticised for running on to the pitch to celebrate their Sky Bet League One play-off final win against Bradford.

O’Brien appeared overwhelmed by Millwall’s victory after striker Steve Morison had struck the only goal with five minutes remaining.

Lions fans poured on to the Wembley turf at the final whistle, with some goading Bradford boss Stuart McCall and his players, while match-winner Morison said they had “ruined” the moment in his post-match television interview.

But O’Brien, who progressed through the London club’s academy, refused to join in the condemnation.

“No, they have the right to do that you know,” he said. “They’ve been supporting us all through the season. They should celebrate as much as we celebrate.

“It’s a team thing and they’re part of the team. They can run on the pitch in my eyes for all they want, they deserve to.”

Millwall clinched promotion back to the Championship following relegation in 2015 and wiped away memories of last season’s play-off final defeat to Barnsley.

“Oh wow man!” O’Brien exclaimed when asked how it felt to be back in the second tier.

“As I said to a couple of the guys earlier – words won’t even come into my head. I can’t really explain how I feel right now because I’m emotional, I’m buzzing. I don’t know what’s going on really, it’s just unbelievable.”