Bulgaria great Hristo Stoichkov called Manchester City attacker Raheem Sterling to apologise for the racism towards England players last month.
Sky Sports says the 1994 Ballon d'Or winner is to have broken down in tears during the call which took place a day after the Euro 2020 Qualifier on October 14.
The call is believed to have been organised by Stoichkov's former team-mate Txiki Bergiristain who is Manchester City's director of football.
Stoichkov broke down in tears while speaking on TV about the disgusting racial abuse England players suffered during the match.
The head of the Bulgarian FA and the team's head coach have since resigned.
