Johnson has enjoyed a colourful career in Wales and Australia
Former Wales coach Scott Johnson has decided not to return to the country after talks with Cardiff Blues.
The 44-year-old was the Blues's top choice to replace assistant coach Rob Howley, who will permanently join Wales's back-room staff in the summer.
"After much discussion, Scott has told us of his decision not to return to Wales at this point in his career," said Blues chief executive Rob Norster.
Johnson has been released by new Australia coach Robbie Deans.
The respected skills guru has been repeatedly linked with jobs in Wales ever since he returned to his native Australia to become John Connolly's assistant coach in 2006.
Connolly's sacking in the aftermath of the Wallabies' World Cup quarter-final exit also proved the end of Johnson's reign as assistant coach.
The Australian worked under three Welsh coaches before three games as caretaker chief during his five-year rollercoaster stay in Wales.
Scott's relationship with Wales and certainly our playing and coaching staff here at the Arms Park remains close
He arrived as Graham Henry's skills supremo in 2001 and played a major role as Mike Ruddock's attack coach in Wales's first Grand Slam for 27 years in 2005.
Johnson then took over the national side when Mike Ruddock left halfway through the 2006 Six Nations tournament.
"Scott's relationship with Wales and certainly our playing and coaching staff here at the Arms Park remains close despite his decision not to return at this time," said Norster.
"We take the opportunity to thank Scott for his genuine interest in ongoing developments here at the Blues and wish him every success in the future."