Speaking to Red Bull’s Servus TV website following last weekend’s Italian Grand Prix, Marko blamed Perez’s inconsistent form this season on his ethnicity. Referring to Perez’s up-and-down season, Marko said: "We know that he has problems in qualifying, he has fluctuations in form, he is South American and he is just not as completely focused in his head as Max [Verstappen] is or as Sebastian [Vettel].”The 80-year-old has since issued a statement in which he apologised to Perez for his “offensive remark”. Hamilton was highly critical of Marko when he was asked about his comments ahead of this weekend’s Singapore Grand Prix. “It’s…