Know nothing about the Aussie other than what's been put in here, seems he's more Kelleher than Holder but time will tell on that one. Looks more and more likely that Barker will end up as 2nd heat leader which is a huge problem if the case. He's simply not at that level anymore.
Assuming Barker does indeed sign, with 13.76 left, that does present options. We need something decent at number 1, someone who can win races home and away however that would likely mean the Aussie lad starts in the main body. Will be interesting to see where we go.