Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_44911 ( "Team" text, "Manager" text, "Home city" text, "Stadium" text, "Capacity" real )

### Question ###
what is the capacity when the home city is zagreb and the manager is zlatko kranj ar?

### Accurate SQL ###

SELECT AVG("Capacity") FROM table_44911 WHERE "Home city" = 'zagreb' AND "Manager" = 'zlatko kranjčar'