Arsenal manager Arsene Wenger, now far and away the longest-serving Premier League manager having taken charge of the north London club in 1996, was dismayed that Manchester United had not stuck with David Moyes and warned the high turnover of coaches would affect the quality of coaching in the long term.
"I'm sad that he [Moyes] wasn't given time and I wish him well," said Wenger. "I think it's just part of what the modern game is now. There is no time available for people to do their job and that is a big threat for our game.
"If you want quality people in any job, you need to give them time to develop and to become good, or people with the quality will not come into our job any more," he said.
"The average (job life) expectancy of an English professional club at the moment is 11 months, and that is quite unstable. Every guy who is married, has a family, will have a big hesitancy before he goes into that game.
"That means the quality of the coaching and the quality of the managing is under threat."