Cronulla five-eighth Adam Dykes may have played his last game in the NRL after breaking down with a groin injury at training.

Dykes failed to finish Thursday morning's session to continue a frustrating season for the 30-year-old, who has played just 12 games in 2007 due to foot, quadriceps and now groin injuries.

He will miss Saturday night's match against Parramatta and there is also some doubt as to whether he will ever run out for the Sharks again with Dykes to link up with English Super League club Hull from next season.

"I'd like to think he could play again before the end of the season," Sharks coach Ricky Stuart said.

"I'm sure he'll work hard on his rehab in an effort to get back on the field and to finish the way he deserves."

The Sharks finals hopes were finally extinguished with Monday night's 17-16 loss to Melbourne, the narrow defeat representing Cronulla's eighth loss by four points or less.

Dykes was one of the Sharks best against the Storm but Stuart will now have to go in search of a new five-eighth option for the game against the Eels.

His task is made all the more difficult with three of the club's other halves options - Greg Bird (thumb), Brett Kimmorley (knee) and Brett Kearney (leg) all still on the injured list.

"Adam is very disappointed and upset with this latest injury but unfortunately it's been the story of the season for both the club and for Adam," Stuart said.

"His breaking down at training is something of a continuation of what we've been going through all season.

"It has been almost impossible to work on any combination and continuity with the key positions of six, seven and nine, with the injuries we've had this year.

"I'm going to have to try to find another replacement but we're getting low on halves."

It wasn't all bad news at the Sharks though with young fullback Mitch Brown agreeing to a new two-year deal.

The 19-year-old local junior had been targeted by a number of other NRL clubs after several encouraging displays this season.

"Ricky has given me the chance to play first grade this year and I've learnt so much under his coaching," Brown said.

"He's teaching me about being more of a ball player and I'm getting my hands on the football a lot more.

"I've got a good opportunity to play a lot of first grade here at the Sharks."

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