I think you should also read right underneath that statement:
Anglicans cannot assume Catholicism will someday drop objections to female priests and bishops, Kasper said. "The Catholic Church is convinced that she has no right to do so."
He's the head of the Pontifical Council for Promoting Christian Unity. You can not have Christian unity if you are in disagreement with one another. Does that make sense?
Indeed, I found the next sentence even more confusing. It's as if he's saying, on the one hand, that the Anglicans should not have women bishops until the Catholics can approve, and on the other, they never will approve.
I'm trying to read it in such a way that it doesn't sound vaguely sarcastic, and more befitting the head of the Pontifical Council for Promoting Christian Unity.
At the moment I'm blaming the reporter who wrote this up. Possibly in full context his comments would be clearer.