Wales Captain Sam Warburton's agent has said that because of the current fallout between the Welsh Rugby Union and the regions, "there are no cast iron guarantees that Sam will be able to play for Cardiff Blues next season."
Derwyn Jones says Warburton intends to play for the Blues next season should all the issues be resolved.
The warning comes after Warburton signed a WRU National Contract yesterday.
The WRU have said that Warburton will be released for Cardiff Blues games outside his Wales duties.
More top news
Gareth Bale insists reaching the last eight of Euro 2016 is not enough for Wales ahead of their quarter-final against Belgium.
Thousands of Queen Bey fans are expected to descend upon the capital on Thursday, as the Formation World Tour comes to Wales.
Inspectors say South Wales Police has improved how it protects children but there are still some areas that need further attention.