Sunderland manager Steve Bruce insisted the trend for sacking managers "has got to stop" after seeing his former team-mate, Mark Hughes, sacked following Manchester City's 4-3 win over the Black Cats.
Hughes, who has lost just two games this season and whose side defeated Sunderland 4-3 at Eastlands on Saturday afternoon, was sacked and the club announced Roberto Mancini as Hughes' replacement.
Bruce explained: "With the industry we're in, I'm disappointed for any Premier League manager who loses their job. It's the worse feeling in the world and I'm disappointed for him."
He added: "You can't build clubs in 18 months or one transfer window, you need a bit of time.
"It's got to stop. What's the the point spending years getting (coaching) badges and qualifications when you only get six months in the job?''
The announcement about Hughes' non-appearance was made only a couple of minutes before Bruce did make an appearance at the post-match press conference.
The Sunderland manager continued: "When things are not going well there is a clamour for the manager. I don't think anyone is surprised by these things anymore.
"It is ridiculous. You are not going to encourage any young person to try and take this up. What is the point?
"What are the stats? Managers last about 18 months in the Championship. It is longer in the Premier League but that is because of the amount of time Sir Alex Ferguson, Arsene Wenger and David Moyes have been in their jobs. I am disappointed for Mark Hughes. Really disappointed."
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