Former Liverpool forward John Barnes believes English football is in grave danger of losing a generation of "potentially great managers".
When Portsmouth sacked Tony Adams on Monday after less than four months in the job he joined two other former international captains - Roy Keane and Paul Ince - in leaving a Premier League club during the course of the season.
Barnes, who is now head coach of his native Jamaica, had his first taste of management cut short at Celtic and the former Watford player feels it is becoming a worrying trend in the game, he said: "Never mind about Premier League level, I think football generally is in danger of losing good people."
He added: "I believe you will have a generation of managers - potentially great managers - lost to the sport.
"These are people with great potential who do not get the right opportunities.
"Support should be given to coaches of all ages but unfortunately it isn't.
"Instead you have people making decisions who know nothing about football and they think the easiest thing in the world is just to sack the manager.
"But players have to start taking accountability. I had a situation at Celtic where, sub-consciously players knew it was the manager who would take the criticism if they under-performed."
Barnes also believes that Chelsea's decision to part ways with a manager of Luiz Felipe Scolari's pedigree after less than a season at the helm was misguided.
"It typifies what modern football is when you have a World Cup winner (Scolari) treated like that," said Barnes.
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