Twin brothers Innes and Lewis Senior have signed two-year deals with Castleford Tigers.
The two Ireland international wingers have joined the club after initially arriving on loan deals, Innes from Huddersfield GIants and Louis from Hull KR.
Innes has had a fine season despite Tigers’ struggles, and is currently standing third in the Super League try-scoring charts with 10 in 11 appearances, and also has three tries in two Challenge Cup games.
The 23-year-old scored four tries in the Tigers’ 36-24 win over Salford and has doubles against London Broncos, Huddersfield and Batley, the latter in the Challenge Cup.
Louis has also been prolific, with five tries in four appearances this season.