Sean Dyche overruled Dominic Calvert-Lewin and told the striker to come off after he suffered a potential groin problem against Manchester City.
The Blues boss said the 26-year-old had sought to persevere despite feeling tightness but that he felt it was important to withdraw him as a precaution.
The substitution took place at half-time and with the away side having opened up a two goal lead. Dyche later said it would have been a harder decision to make had the game been goalless.
