Average manager spell is 123 years

For bosses in the Championship, where there were 20 dismissals in the recently-completed season, the average spell in charge is even lower, at 0.86 years.

There were 47 manager dismissals in the 2014-15 season, the most since the 2001-02 campaign when 53 were sacked.

Arsene Wenger continues to buck the trend, having managed Arsenal for 18.67 years and 1,065 matches.

Source : PA

Source: PA