Guardiola singled out Sergio Aguero for an on-field talk in the wake of the champions' impressive 5-0 victory at West Ham.
The striker and Raheem Sterling had appeared to exchange words before Aguero's late spot-kick, with Sterling clearly keen to take the penalty, which if scored would have sealed him a hat-trick.
Even though City were 3-0 up and the game was all but won, Aguero stood firm and refused to hand over the ball to Sterling, who was seen on television with a wry smile on his face.
Guardiola didn't appear angry with Aguero, but the conversation between the two continued as both headed towards the tunnel.
Aguero and boss Pep Guardiola had a conversation as both sides left the field at full time. Aguero shrugged off his sterling appeals to take the penalty in the 84th minute,as Sterling appeared less than impressed after the chat denied him the chance of a hat-trick. pic.twitter.com/IoLHdV7jVn— Lilian Chan (@bestgug) August 10, 2019