Conor McGregor is in Ireland at the moment and he dropped by Croker to post this mysterious message.
This stadium has hosted many wars. It will host one more. WELCOME TO EIRE!!! pic.twitter.com/O3ERHHwf9e
— Conor McGregor (@TheNotoriousMMA) November 26, 2014
Why is he in Croke Park, and what 'war' is he referring to?
We can only hope it heralds some big news for us fans in Ireland.