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.
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