The bad news is he will miss the first round of club rugby.
The 21-year-old moved to Spain a month ago to take up a contract with Santboiana.
He had a brilliant campaign for the Eels, becoming the first player to break the 300-point barrier in Dunedin premier club rugby since in 1976.
Prior to that date detailed records were not kept, so perhaps Casey is the first player to have reached the milestone, full stop.
His father, Mike Casey, said Josh was thoroughly enjoying life in Spain, although running the Santboiana backline was a huge challenge when you do not speak Spanish.
''He is really enjoying it. There are a couple of Kiwis in the team. Jamie Chipman, who captained Counties a few years ago, is in the team.
''They have an Aussie coach and a New Zealand manager - Bruce Hemara, an ex-All Black. It is a really, really good set-up. He said they have a rehab centre and a gym which is awesome.
''The people are great but the only struggle is the language barrier. But he is loving it and it is really good for his game too.''
Santboiana had a one-point loss to Gernika a week ago but might not have lost had Casey been able to communicate more effectively with the men outside him, Mike said.
''There were some simple missed tackles but he said to me it is really good for him because he has to do so much more and cover so much more. He can't rely on others to do the job, so he has to organise things a lot more than he has ever had to here.''
''He gets well looked after there. It is a really good contract he's got and all he has to do is pay for his food and coach kids twice a week for a couple of hours.''
So good that Josh ''probably won't be back until the second round of the comp here''.
Taieri will probably have the services of Hayden Parker, so the Eels will still be in good shape for 2016.
