Wrth lansio papur diweddaraf Llywodraeth Cymru ar Brexit, bydd y Prif Weinidog hefyd yn rhybuddio Llywodraeth y DU rhag defnyddio ymadael â'r UE fel cyfle i fynd ag arian a phenderfyniadau cyllido allan o ddwylo Cymru.
Launching the Welsh Government’s latest Brexit paper, the First Minister will also warn against the UK government using our exit from the EU as an opportunity to take money and funding decisions away from Wales.