Guardiola may play Aguero in the Champions League dead rubber against Celtic to give him a game .
Guardiola is not due to return from Guardiola 's four - match ban until the clash with Liverpool on New Year 's Eve .
Guardiola may play Aguero in the Champions League dead rubber against Celtic to give him a game because he is not due to return from his four - match ban until the clash with Liverpool on New Year 's Eve .