Where specifically does he say that? I'd have expected you to cut and paste that direct statement for everyone to see. Where is it? Why do the Protestants over at Ecumenical Review think it was directed at them?
Eastern and Oriental Orthodox are the only churches for which there is a real possibility of corporate reunion in the next hundred years, as JP II knows. Only such a major union could bring in a "new situation" which would return the Church to the state of the first millennium, which he then goes on to mention.