In 2018, he played abroad for the second time in the Canadian Soccer League with Scarborough SC.[8] In his debut season, he assisted Scarborough in securing a postseason berth by finishing fourth in the First Division. He played in the opening round of the playoffs where he contributed a goal against Hamilton City which helped the eastern Toronto side advance to the next round.[9] He played in the CSL Championship final where Scarborough was defeated by FC Vorkuta in a penalty shootout.[10]
He re-signed with Scarborough for the 2019 season.[11] In his second stint with the Toronto side, the club secured a playoff berth by finishing runners-up in the division.[12] He made further contributions in the postseason competition by recording a goal in the semifinals against Kingsman SC which sent Scarborough to the finals for the third consecutive season.[13][14] Radaković was featured in the championship final where Scarborough successfully defeated FC Ukraine United for the title.[15]
He returned to Scarborough for his third season in 2020.[16][17] Throughout the regular season, he assisted the club in securing their first divisional title and featured in the championship final for the fourth consecutive season.[18] Unfortunately, the club was defeated by a score of 2-1 to Vorkuta.[18][19] His contract was renewed for the 2021 season, marking his fourth season with the club.[20] Scarborough qualified for the playoffs where he helped the club secure their second championship title after defeating Vorkuta.[21][22] He also appeared in the ProSound Cup final where the Toronto side was defeated in a penalty shootout by Vorkuta.[23][24]
Radaković re-signed with Scarborough for his fifth season in 2022.[25] He helped the eastern Toronto side secure a postseason once more by finishing third throughout the regular season.[26] During the season the club also achieved an undefeated streak of 18 matches.[27] In the opening round of the playoffs, he contributed a goal against BGH City FC which helped advance the club to the next round.[26] Radaković played in Scarborough's run to the championship final, which the eastern Toronto side lost to FC Continentals (formerly FC Vorkuta).[28]