I've seen it written but personally I find it hard to believe he will be playing centre. The closest Bennett came to disclosing where Benji will play was saying that he won't replace Milford or Hunt in the halves. And Brisbane will have depth in 2017 in the centres for the first time in yonks (Kahu, Roberts, Opacic, Moga).
I think it's more likely that Brisbane are one of (maybe the only?) option Benji has, and so he'll take 100k to provide depth for the halves if/when needed.
If he can provide a bit of coaching to Hunt and Milford, all the better. Their kicking games can certainly improve.