Hi.,
Just like how you implemented GEO based redirection, you can also use user-agent condition to implement the same for all bots or only specific bots like google bot. Can be implemented very simple by using htaccess file or php code.
I am an experienced PHP, Magento & Wordpress Developer and been using [login to view URL] since 2009. So far completed 39 projects in freelancer.com. I completed all my projects within the budget, on time with 100% completion rate and with a five star feedback. This shows my dedication towards not just only placing my bid, but to complete the committed project with the time and budget.
Please check my full profile here: https://www.freelancer.com/u/x5to10pm.html and please feel free to message me for any query.
Thank You.,
Viswa