FC Porto striker Moussa Marega left the pitch in protest at being subjected to racist insults during his side’s 2-1 win away to Vitoria Guimaraes in Portugal’s Primeira Liga on Sunday.
The 28-year-old Mali forward scored what proved to be the winning goal in the 60th minute.
He celebrated the goal by pointing to his skin in response to a section of the home fans who had targeted him throughout the match.
The player was shown a yellow card for the reaction and after the abuse continued he tried to leave the pitch, pointing his thumbs down to the crowd.
But he was restrained by his team mates for a number of minutes.
FC Porto coach Sergio Conceicao was eventually forced to substitute Marega in the 72nd minute.
“We are completely indignant,” Conceicao told reporters.