Lamb, who played with the Newcastle Knights and signed with the London Broncos after switching to Sydney Roosters last season, said he was excited about the opportunity.

Playing in the halves, Lamb will be in the development squad this season and in the top 30 for 2021.

"Brock provides depth to an already talented roster and will ensure competition for spots in our halves remain high," Parramatta general manager of football Mark O'Neill said.

"Following his return from Super League, we've provided Brock with an opportunity to re-ignite his NRL career and we are grateful he has agreed to be part of the Eels for the coming two seasons."

An Australian Schoolboy, Lamb played 32 first grade games with the Knights after making his debut in 2016.

He moved to the Roosters in 2019, but managed only one first grade game behind halves pairing Cooper Cronk and Luke Keary.

"I'm very excited to be here and hopefully we do some good things here," Lamb said of the move Eels after an invitation from head coach Brad Arthur.

"BA said I could come down for two years so I pretty much jumped at it."

Lamb said it was good to get back into training and get "the motor ticking over again and some fatigue in the legs, it was good".

"I was picked up the Roosters last season and for the last five or six games I played in London. I've been around a bit in the last year," he said.

Lamb said there were some differences in playing between Britain and Australia.

"Over there, defence is probably not as structured but they focus on attack a lot. You can find yourself anywhere in defence.

"It's a lot faster obviously because of the focus on attack, so hopefully I can bring that back.

"I like to see myself as a pass first option, but when I went to the UK I found myself running all the time," he said.

"I don't know, I'm still learning a guess, still figuring out what I like to do.

"When I was here in Australia, I'd pass first, kick first, but I found myself running so we'll have to see."