Rush was not expected to arrive at the Arms Park until November but the Blues are desperate to land the star in time for the opening Celtic League match on September 3.
The dynamic ball-carrier and highly effective line-out weapon is still contracted to his province Auckland who want him to remain until the end of their season on October 22. But the Blues want the 28-year-old Super 12 star on board well before that - and the player himself is eager to begin his new career in the Welsh capital as soon as possible.
Blues chairman Peter Thomas and chief executive Bob Norster flew to New Zealand last week in a bold attempt to negotiate an early release for the eight-times capped Rush. And since his return to Wales, Norster has written to David White, chief executive of the Auckland Rugby Union, to follow up the face-to-face meeting.
"We went to New Zealand in person because it's always easier to meet with people face-to-face. Now that we are back, we are continuing to hold pro-active negotiations with the Auckland RU," said Norster. The Blues' case may be helped by the fact that highly-rated young Auckland back-rowers Jerome Kaino and Angus McDonald have not been included in the All Blacks squad for the Tri-Nations.
"I have written to their chief executive to try and get some feedback in the wake of the All Blacks squad selection. We are obviously very keen to have Xavier on board as soon as possible because he's a top-quality player and we believe he will be a huge asset to our squad," he said. "He is keen to come over sooner rather than later and we are working hard towards getting him here for the start of the season."
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series