Mann wasn't purchased as a backup to the halves, he was purchased with the idea of giving us a ball playing fullback. And he was dismal in his first few matches so was dropped.
You are right. He was in fact signed to play fullback to allow Dugan to move to the centres.
However, his main asset when signed was the fact he can ball play and in return that gives us a extra 5/8 type player at fullback.
Mann can handle a move to the halves easily i believe. And if he is a better running 5/8 then Widdoo, then maybe Widdop can wear the 7 and organise the team.
That way, he can pick and choose his moments to inject himself without the burden and pressure of pulling off a play every set.
In 2018 there is an influx of halves that will be available, i dont see Carney accepting a 1 year deal, which if signed is all he should be offered.
This way, if Mann excels, or if carney is signed and excels, we can extend the contracts.
If not, then make a big play for a big name 7 for 2018.
We have Hutch and Mann to experiment with in 2017. I just hope we dont make a knee jerk reaction and do a panic buy that will effect us chasing a big name for 2018.