I read a few posts on the Blackburn forum while he was trialing - they all seemed unhappy that he wasn't signed as he performed well in pre-season for them.
Ernie is definitely looking at converting him to a striker; or at least a winger that scores a few more goals. Appiah and Krishna are pretty hit or miss when it comes to scoring, so it is a bit of a risk - but it's kind of a risk we have to take with no proven goal scorers available. It's a similar situation to last year.
I look forward to Australian commentators calling him Krishna. Or Appiah. Or Bonevacia.