Were his issues due to the death of his father and recent relationship break-up, or something else too? If just the former, I'd expect they're less likely to affect him too badly further in the future, and therefore less of a concern for a buying club.
And there I was reading that he was just stroppy and self-centred.
I think you'd get more from listening to Owen talk about how he was after he knackered his hamstring. Due to injuries, I don't think Kaz is capable of what he used to be able to do.