Dunemann gives the Raiders the experience in the halves to replace veteran five-eighth Jason Smith who is heading to the Cowboys, and Simon Woolford who is heading to the Dragons, while Logan will be used in the front row to help lead the Raiders young forward pack.
Furner said he knows Dunemann has the ability to return to the NRL with success, and expects him to provide some great guidance for the young Raiders halves.
Furner said he expects Dunemann to return to the NRL with a new lease of life, and is looking forward to big things from his former teammate.
"Andrew believes he went to England too early in his career and he still has a lot to offer," he said. "I know what talent he has and I'm sure he will make a good impact next year."
Raider's general manager Don Furner said Logan will be a good mentor for the Raiders forwards, and is looking forward to his arrival at Raiders HQ.
"Scott will help Troy Thompson lead the likes of Michael Weyman, Dane Tilse and Tom Learoyd-Lahrs into the future," Don Furner said. "His and Andrew's experience will be well received by the club as we look to develop our talent base."