Darren McGregor insists Rangers supporters are right to label the remaining members of last season's Ibrox squad "failures."
Despite having the second biggest budget in Scotland, the Light Blues saw their promotion bid collapse.
First they could only limp home to a third-place Championship finish before being humiliated by Motherwell in the play-off final.
That 6-1 mauling cost caretaker boss Stuart McCall his chance to keep the manager's job on a permanent basis.
Englishman Mark Warburton has now been charged with leading Gers back to the Ladbrokes Premiership.
His first act will be to replace the 11 players who were allowed to leave following that Well disaster, but McGregor believes the men who remain are determined to make amends by winning promotion at the second attempt.
The defender said: "There is no point beating about the bush - it was 6-1. We were out-played and under-performed over the two legs.
"It's difficult as a football player to admit that. You never like to admit that you did fail, but I'm sure if you ask 99.9 per cent of the fans, they will say that the boys who were here were failures because we never got up.
"So that's a tag that we rightly got.
"Now it's about this season and trying to prove that we are not failures."
Meanwhile, ex-Gers striker Kris Boyd has signed for Kilmarnock for the third time, on a two-year deal.