Tony Mowbray's spell as Celtic manager was unsuccessful. Despite introducing the Celtic huddle, he couldn't replicate his playing success as a manager.
Mowbray lasted nine months after replacing Gordon Strachan, and hasn't managed in Scotland since. Gary Caldwell, a former player under Mowbray at Hibernian and Celtic, attributes his failure to one key reason.
The weight of expectation didn't help.
Author's summary: Tony Mowbray failed as Celtic manager due to high expectations.