Despite the incident, which allegedly took place at Manchester City's training base, Pep Guardiola started the England international. Sterling was by no means rattled, scoring twice as City comfortably beat Spurs 4-1.
It is understood that the winger was approached by a man at the players' entrance of City's training complex. The man then kicked the player before calling him a 'n*****' when Sterling got out of his car to ask if there was a problem.
City have not denied reports and it is not known if the incident has been reported to Greater Manchester Police, but is has not called into question the security of City's training base.