Bydd y Prif Weinidog hefyd yn pwysleisio'r angen am drefniadau pontio cadarn i roi amser i’r negodiadau arwain at berthynas hirdymor sy'n gweithio ar gyfer Ewrop gyfan.
The First Minister will also stress the need for smooth transitional arrangements to give space for the negotiations to deliver a long-term relationship that works for the whole of Europe.