Who let the Dogs out?

[McRooster]

Rodney Eade confirmed on ten news tonight that whilst they were pleased with Aker's form, training and commitment they still had a few concerns to work through with him. Very tight lipped.
Mitch Hahn still remains out and Brad Johnson in some doubt.

Anyone know what the other issues with Aker are, how long Hahn out for and will Brad Johnson come up?