What is the fine-grained topic of the following text: Chelsea is ready to turn to Zinedine Zidane to make them a European superpower again as current manager Maurizio Sarri is running out of time after the 6-0 drubbing at the hands of Manchester City saw the Blues drop to sixth position in the Premier League table. Only return the topic.
Chelsea considering Zinedine Zidane as a replacement for current manager Maurizio Sarri