The 17 year-old's father, Branko, admits his son could be on the move this month after growing frustrated with the attitude of Dinamo management.
Dinamo have attempted to 'hide' Muric from big club scouts ahead of signing him to pro terms and launching his first team career. This approach has frustrated the Muric family, which are fielding enquiries from Manchester United, Chelsea and Barcelona.
Branko was asked about staying in Croatia and Robert moving to Hajduk Split.
"Hajduk? No, thanks," was his reply.
Sources have told 24sata.hr that United have made a formal move for Muric, being willing to pay big for the teen this month.