I swing between great defensive and attacking effort for 3 weeks, to **** defensive effort. Green is a mixed bag for mine and I confess to being undecided. But at 31 years of age and averaging 10 tackles a game to expect him to go to hooker and make 40 plus tackles a game without missing 30 of them is at the least unrealistic. You are not going to strengthen the team by hoping to strengthen one position (5/8) and weakening hooker.
Cullen is an interesting player ... brilliant reggie, often the best player on the park, but has mistakes in him. Although he is capable of some good hits in defence, don't know if his defence is 1st grade standard. Only way to tell is when he gets his opportunity. I personally think his arms are too short.