The side brought in five players from Ireland at the beginning of last season and added a sixth about a month in.
While the team's results on the field had been disappointing, the group had been having a positive influence off the field.
Danny Ledwith, Conor O'Keeffe and Stephen Last are to continue in their roles as development officers with Football South.
O'Keeffe and Last are based in South Canterbury, while Ledwith is based in Otago.
''They've got a lot of experience in that role overseas and have been doing some pretty amazing work in that role,'' Football South CEO Chris Wright said.
''So they've committed to that as a primary thing and playing as a secondary component. So they've been really committed to the work they're doing in the regions and that's going really well.''
Eric Molloy, Andy Mulligan and Danny Furlong originally had an agreement to play the season and see how it went.
However, all have enjoyed their time and have secured their own employment, allowing them to stay on.
Wright is unsure if any of the group will play in the winter club season.
They had all gone the past two years without a break and were carrying injuries which needed to be looked after. However, that decision was up to the players and Football South would not influence them one way or the other.
It was hoped they would all be able to continue to help with coaching in the region.
They had been getting positive feedback for their work in schools and were hoping to extend that into the clubs.
The federation was happy with what they had got out of the group, despite Southern United's continuing struggles on the field.
''It's easy to stand as a fan on the outside and make judgements based on what's happening on the pitch,'' Wright said.
''I think the important thing for me is when you talk with the wider team and the players that they bring a lot to the team.
''They're handy players, but they're also great guys and they've brought a lot to football in the region. We wouldn't have done it if that wasn't the case.''
He said having O'Keeffe and Last to fill the South Canterbury development roles had been a big plus.
It was a role that had been advertised several times before finding them.
The players felt plenty of pride towards the region and Wright said the team did not view them as imports, as opposed to locals, as they were all Southern United players.
He said the team would keep training over winter and continue to identify talent, with players at the level required being involved.
-By Jeff Cheshire
