The Aviva Premiership and French Top 14 clubs believe the current European structure favours teams from the Pro12 - made up of sides from Wales, Scotland, Ireland and Italy - both in terms of qualification and in their share of revenue.
The Pro12 sides, or at least a reduced number, will be allowed to join the potential new tournament, but participation by teams could yet be vetoed by each nation's governing union and the International Rugby Board.
The financial planning in Wales is complicated further by a proposed extra pot of £1m on offer from the Welsh Rugby Union (WRU).
That sum has been earmarked for the four regions, but the Blues, Dragons, Ospreys and Scarlets do not yet know how the money will be shared and whether there will be any limit on what it can be spent on.
"Five weeks ago we said to the WRU and Cardiff Blues that Warburton wants to stay in Wales, but there is no contract offer on the table because of what is happening in Europe," Jones said.
"There is only so much time that guys like Warburton, Leigh Halfpenny and Adam Jones can wait until there is a contract offer, so the WRU and the regions must get together and do whatever they can for the good of Welsh rugby.
"[There must not be] the kind of power struggle that has gone on in the past [between the WRU and the regions] and they must do it now.
"If they don't do it now then these players will be going."
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