New Zealand-born Saracens fly-half says he could also have played for England, but Scotland's style suits his game.
The squad includes former New Zealand U20 representative and ex-Crusaders first-five Fergus Burke, who has been playing in the Gallagher Premiership with Saracens.
Saints announced on Thursday afternoon that long-serving Ferguson, who didn't sign a contract extension last year, would be leaving the reigning Gallagher Premiership champions when his current deal expires this summer.
Eligible for New Zealand, England and Scotland, the new Saracens playmaker may have a big decision ahead.
Glasgow's late comeback came up just a point short at the Stade Mayol. Trailing by a point at half-time, the Warriors never quite got in front but nor were they ever out of the fight.
Wales fell to an all-time results low in their 143-year international rugby history after suffering an 11th successive defeat.
Fiji, Australia and South Africa await Wales, who have not won a Test match since the 2023 World Cup, in the upcoming Autumn Nations Series.
Former Wallabies captain Rocky Elsom has been found guilty on charges relating to forgery, and misuse of corporate assets by the Narbonne court.
The dual-qualified half-back had been touted for a potential call-up by Steve Borthwick’s England, but that hasn’t materialised and he has instead declared his allegiance to the Scots for their upcoming trip.
That little vignette suggested how the scrum-half Gus Warr is a little bit of a Jack the lad around Carrington, something his boss Alex Sanderson certainly advocates.