One of the most urgent issues facing negotiators is the matter of Northern Irish governance.
Westminster has negotiated for the nation since Brexit, and because of this, it now holds a unique relationship with the EU.
The Commission has noted a need for Northern Irish residents to have a say in legislation that dictates how the bloc operates within their country.
Proposals include formalised, structured communication between the two governments or changes within the joint consultative working group.
If necessary, the EU may also push to establish an intra-parliamentary sub-structure with the UK.