Hull Kingston Rovers have agreed deals to sign Crusaders' Australian duo Ryan O'Hara and Lincoln Withers, BBC Radio Humberside understands.
Hooker Withers, 30, previously appeared for NRL sides Canberra, St.George-Illawarra and Wests Tigers.
O'Hara, also 30, plays at prop and has also been at Canberra Raiders and the Tigers before moving to Wales.
Both players will both leave the Welsh side at the end of the season following their withdrawal from Super League.
Neither of the pair will not count towards the Robins' overseas quota due to a special Rugby Football League dispensation.