Newcastle halfback Jarrod Mullen received some positive news on Monday when scans on his pectoral muscle injury indicated he could return to NRL action in two months.

There were fears Mullen's season may be over when he left the field in pain after making a tackle on Parramatta halfback Jeff Robson during his team's gutsy 8-6 win on Saturday.

But the scans revealed only a partial tear rather than the worst case of being torn off the bone.

As a result, the former NSW State of Origin representative expects to be back to help the Knights in the charge to the finals.

"This is great news and a big relief for both Jarrod and the club," coach Rick Stone said in a statement.

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