Vandalism that was sprayed on a mural of Marcus Rashford is "not believed to be of a racial nature", say police.
The work in Withington, where Rashford grew up, was defaced after England lost in the Euro 2020 final.
Officers say they have several lines of inquiry and are "keeping an open mind" about the possible motive.
The mural, which was covered in positive messages after the vandalism, has since been restored by street artist Akse.
Greater Manchester Police said officers were examining CCTV from the area and forensic evidence from the spray paint used.