He's played 257 NRL games, scored 127 tries and is the Canberra Raiders co-captain, but the arrival of Curtis Scott has Jarrod Croker looking over his shoulder.

Croker has been a mainstay on the Green Machine's left edge, forming a deadly combination with young gun Nick Cotric. But the fact Scott can play either right or left centre means he'll push Croker and Joey Leilua throughout the pre-season.

New signing Curtis Scott trains with the Raiders on Wednesday. Credit:Karleen Minney

Scott was part of NSW coach Brad Fittler's Emerging Blues camp last week and played in two NRL grand finals during his four seasons with the Melbourne Storm. He only played nine games this year due to a foot injury, but is starting to get into full work with the Raiders squad.

"Curtis has played both sides, so I've got to be on my toes," Croker said. "It's no different to any other year with anyone else coming through. He's a quality player. He was obviously in the Blues emerging squad for a reason. He's a talented footballer and he's signed here long term.