Horsman picked up his injury against Leeds (Getty Images)

Horsman was set to return after six months out with a shoulder injury but director of rugby Mike Ruddock says he has picked up another injury.

"With the overload of preparing for the game he has tweaked his ankle and won't be back," said Ruddock.

Darren Morris also misses out with injury and Tony Windo will again line up in the front row.