"Money is a big thing and with me especially, there's only a finite amount of time you can play. You can't play into your 40s and 50s unfortunately so you have to make the most of the opportunity you've got right now.''
The 30-year-old also told the Otago Daily Times that the first decision to make was whether or not he'll stay in New Zealand.
"I've enjoyed my time down here. In saying that, I'm not getting any younger and I need to start looking at the future."
Thomson has played four tests this season, the last being against South Africa in Johannesburg, but has fallen behind Liam Messam and Victor Vito in the pecking order on the side of the All Blacks scrum.
Thomson will line up for Otago in the Championship final against Counties Manukau tonight in which could be his last game on New Zealand soil.
- nzherald.co.nz