Ministers were unanimous that it was essential that the people of Wales have a say on the terms of that deal, without revisiting the result of Thursday’s referendum.
Roedd y Gweinidogion yn unfarn ei bod yn hanfodol rhoi llais i bobl Cymru ar delerau’r fargen honno, heb fynd ati i ddadansoddi unwaith eto ganlyniad y refferendwm dydd Iau diwethaf.