Several local media this week report he's training/on trial with the first team selection as result of a previous trial in if I understood it correctly in april this year.
Inbox: CARY, N.C. (January 23, 2019) – North Carolina FC has signed two more key players to its squad with the additions of forward Robert Kristo and defender Timmy Mehl. Both moves are pending league and federation approval, while the club is also waiting for the receipt of Kristo’s International Transfer Certificate.
From the inbox: CARY, NC (October 27, 2021) - North Carolina FC veteran Robby Kristo announced today his retirement from outdoor professional soccer after a seven-year career that included time with the Columbus Crew of the MLS, Spezia Calcio, SSD Fidelis Andria, and AC Tuttocuoio in Italy, and VFL Osnabruck in Germany before ultimately culminating in three years spent with North Carolina FC. The Croatian international has inked a three-year deal with the St. Louis Ambush of the Major Arena Soccer League (MASL).