From Emma Quayle's twitter:
"caddy wanted to go to Essendon, they were the only club GC was talking to. He will stay on the GC"
"yeah, homesick and a few other things. The fact he was injured for so long didn't help"
"that's not accurate. Ess made a pitch, GC was dealing direct with them. The stuff with his dad was just one factor"
"dead & almost buried unless GC somehow relents tomorrow"
"caddy will stay on the GC if it doesn't happen, which is likely The dad thing was only 1 factor, GC was only talking to essendon"