The WRU body announced three licences would be granted – one to a team in Cardiff, one in the west and one in the east.
Negotiations have continued with Ospreys, Scarlets, Cardiff and Dragons but nothing was resolved on this issue before the end of 2025.
If an agreement cannot be reached this month, a six-month tender process could open to determine which clubs remain.
The governing body is also facing a call for an Extraordinary General Meeting (EGM) from some grassroot clubs.
One of the proposed motions is a vote of no confidence in Collier-Keywood and Malcolm Wall, chair of the Professional Rugby Board (PRB).
