Shaun Edwards says he would listen to a head coach's offer "in rugby league or rugby union" if one came his way.
The Wales defence guru has been a key part of Warren Gatland's coaching team since 2008 and will be out of contract after next year's World Cup.
The former Wigan and Great Britain rugby league star previously enjoyed a successful club coaching career with Wasps when they dominated English and European rugby.
And he could easily be a man in demand following the 2019 tournament as Wales consider life after the departing Gatland.
Edwards faces a head to head with his former rugby league team-mate and Ireland defence specialist Andy Farrell when Wales continue their NatWest 6 Nations campaign tomorrow.
Wales have conceded the least number of points in this season's Six Nations, but they can expect a fierce examination from a team unbeaten at home since November 2016 and harbouring major title aspirations.
Wales will also keep themselves firmly in the mix for Six Nations silverware if they win,