"I think we deserved to get out of jail for our second half performance but we didn't deserve to get out of jail for the way we defended," McCarthy said after the match.
"We are letting goals in far too easily and if we continue to do that we won't progress any further.
"In terms of effort the players can't be knocked or in the way they played especially in the second half when we had enough chances.
"The opportunity to win something is in reach for them but they will never forgive themselves if we let it out of our grasp, that's for sure."