"Gareth's a great player and because he's young he's only going to get better," said Brian Quailey.
"Obviously with quality wingers like Lee Hodges and Peter Beagrie around Gareth was not playing as much as he liked, but it's still a big loss."
Quailey's future up at Glanford Park is also in doubt, as he dithers on a new contract to stay with the Iron.