The Annan Plan may be dead but any further negotiations will have to start from there. It was after all the culmination of decades of UN involvement in the Cy Prob, including exhaustive surveys, consultation and investigations. Too, the plan accepted and endorsed by Security Council resolution 1475 (unanimous support for the Annan plan) and Decision of the European Council (12.12.2003).
That TCs accepted it on the promise of direct trade with the EU, after the EU had categorically stated that Turkey had done all it could to facilitate a settlement) places the ball firmly in the EU court.