Paul has starred in both rugby's codes, winning 23 caps for New Zealand and the Grand Final with Bradford in league, and four caps for England in union.
Lomu has dismissed speculation linking him with a change of codes to rugby league and insists he is intent on playing out his career in union, possibly back in the Magners League.
The 32-year-old former Wigan and Great Britain rugby league captain, who switched codes in 2005 in a deal funded by Saracens and the Rugby Football Union, was named in the World Cup squad but after injury ruled him out of the quarter-final against Australia, he did not feature again.
Former Wigan rugby league star Farrell has endured a frustrating time since switching codes in a move funded by Saracens and the Rugby Football Union in 2005.