The WRU faces an Extraordinary General Meeting (EGM) called by member clubs with Collier-Keywood facing a vote of no-confidence.
“We will continue to abide by decisions agreed by our member clubs in accordance with our constitution, working collaboratively with our rugby family,” said Collier-Keywood.
“We must also lead and act in the best interests of the whole game.”
Collier-Keywood accepts the WRU will not convince everybody.
“We are aware there will always be factions who do not agree with decisions we are making and our direction of travel,” he said.
“Welsh rugby is at a crossroads. Change is difficult, but essential for the long-term success and health of the game.”
One of the WRU’s most staunch opponents are Swansea council with Ospreys due to move into a £5m redeveloped St Helen’s stadium in the city.
The WRU’s decision to name Ospreys owner Y11 Sport & Media as the preferred bidder to buy Cardiff has created controversy.
As a result, Ospreys fans and staff have been left fearing they will be the professional team culled, with Swansea council claiming they were told of that exact scenario by WRU chief executive Abi Tierney and Ospreys chief executive Lance Bradley at a meeting in January.
While the meeting was meant to be confidential, Swansea council today said it had no alternative but to provide a version of what they say happened, external.
This followed comments by the WRU chief executive earlier this week in which she said no decision on Ospreys’ professional future had been taken, a claim Swansea council dispute.
Council leader Rob Stewart has again called for the resignation of Tierney, who in turn says the notes published by the council are not “an accurate reflection of what she said” and her “own comments, published without her consent, made clear she did not say what was purported”.
Swansea council has also begun formal legal proceedings against the WRU in a bid to stop the proposed sale of Cardiff to Y11, which they claim breaches UK competition law.