Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_88 (capacity INTEGER, home_city VARCHAR, manager VARCHAR)
### Question:
what is the capacity when the home city is zagreb and the manager is zlatko kranjčar?
### Answer:
SELECT AVG(capacity) FROM table_name_88 WHERE home_city = "zagreb" AND manager = "zlatko kranjčar"