Gasnier still
unable to train

New Souths Wales centre Mark Gasnier has missed a Blues training session on Tuesday afternoon after coming down with a 'stomach bug'.

Gasnier suffered a hip injury while playing for the St George Illawarra Dragons in their round 9 NRL match. He was named in the NSW side for next week's opening State of Origin clash despite being sidelined for the round 10 encounter.

Gasnier's team mate and centre partner Matt Cooper trained lightly and continues to recover from a hamstring injury. The news was also better for Luke O'Donnell, the North Queensland Cowboys back rower is recovering from a rib injury but completed a light session at Sydney's Coogee Oval .

New South Wales coach Graham Murray says he is not overly concerned about Gasnier's latest setback.

"Mark's got a stomach bug so he's training indoors. I don't know how serious it is, he's just ill." Murray told AAP.

"I mean he's just ill, I don't know what else I can say there."

Luke Lewis (Penrith Panthers) and Eric Grothe (Parramatta Eels) have been put on stand by with a decision on the fitness of Gasnier and Cooper expected later this week.

In other news, Sean Hampstead has been appointed to referee next Wednesday's match at Telstra Stadium.