TOMMY Martyn will not play as Leigh Centurions bid to get their promotion bid back on track at home to Hull KR on Sunday.

Martyn injured his arm during the National League One home defeat against Halifax last Sunday.

X-rays have shown that the arm is not broken, but there is some tissue damage around old injuries -- and the veteran is now considering his playing future.

Coach Darren Abram said: "The doctor has told Tommy to think about his future, and I think he'll take a couple of weeks to do that."

Martyn joins a list of casualties who will miss tomorrow's game, which Centurions need to win to stay in touch with leaders Whitehaven.

However, Leigh have strengthened their squad by signing Australian second rower Luke Isakka from NRL side Wests Tigers.

The 23-year-old has joined Centurions for the rest of this season.