Let's put this in a scenario that most could better relate to...Disappointed but not surprised. Why would nick want to play for the leader of the team who has been attacking him continuously?
Let's say he have player X who's a very good player who plays for the Falcons
He's teammate of player Y who also plays at the Falcons.
Both players have a reputation as "bad boys" but player X has cleaned up his act recently and has acted to a standard consistent with most others in the industry.
Player X decides he wants to join the Sharks but multiple times, the Sharks coach/captain publicly (and allegedly privately) comes out and criticises player X because player Y is acting up.
The coach/captain makes no effort to clarify matters nor do the Sharks show any inclination to reach out to him.
How do you reckon player X would feel about going and playing for the Sharks now?
Is it reasonable for him to say "well, rather than going to a club who has treated me poorly and doesn't want me, I will stay here where I can go about my business and be fully supported by the Falcons (Tennis Australia)"?