Last week, Toure sensationally suggested that the former FC Barcelona manager was 'jealous of him' and clearly had a problem with African players which prompted his exit at Barca and more recently at City.
In a war of words between the Ivory Coast legend his agent Dimitri Seluk and Guardiola, the Spaniard took a cautious approach initially - but he's since called out Toure over the sensational claims.
"It's a lie and he knows it," Guardiola stated to TV3. "We were together for two years and now this is when he says it.
"He never told me face to face."