Andy Farrell has insisted it has "never been difficult" battling his son Owen, who will return at fly-half for England when they face his Ireland side in the Six Nations on Saturday.
Farrell previously worked as an assistant coach with England under Stuart Lancaster, but left the role after Eddie Jones took over in 2015. He joined Ireland as defence coach in 2016, before being promoted to head coach after Joe Schmidt departed following the 2019 World Cup.
And while Farrell Sr is looking to clinch the Grand Slam with victory over England, Farrell Jr is hoping to lead an impressive fightback after he was dropped for England humiliating 53-10 defeat to France.