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West Ham manager Sam Allardyce believes the need for instant success in football is leading to more and more managers losing their jobs.
Reading sacked Brian McDermott earlier this week just 33 days after he had been awarded the Barclays Manager of the Month award for January.
Nigel Adkins - the man who finished second to Reading in the npower Championship with Southampton - has also recently lost his job.
Allardyce is now the only manager in place at the six clubs who were either relegated from, or promoted to, the top flight last season and the 58-year-old reckons the lack of long-term vision is to blame.
"From a manager's point of view it is always sad when you see one of your fellow managers lose their job," he said.
"We all know it is a volatile world and we know how volatile it is year-in, year-out now and it is becoming less patient than ever before.
"He (McDermott) did a fantastic job at Reading and at this particular time the owner thinks bringing someone else in for the last nine games is going to make the difference, which is pretty sad really.
"Everybody strives for success and at the end of the day there are only three teams can get promoted.
"Realisation and expectation don't go together, realisation is, if you have got a small wage budget you are going to finish lower in the league.
"New owners, if they are foreign or British, they are less patient than every before and generally a sacking comes from poor results, media and fan pressure and the owners are unable to deal with that pressure like the managers can."
Allardyce take his West Ham side to face Chelsea on Sunday, looking to complete the double over the European Champions after a 3-1 victory at Upton Park earlier in the season.
Avram Grant, who has managed both clubs in the past, claimed earlier this week that the West Ham job was harder than being at the helm at Stamford Bridge, but Allardyce thinks every job comes with different pressures.
"Every club is difficult in its own situation," he said.
"If you have got the millions and millions that Chelsea have got then you aren't allowed to lose a game of football and if you haven't quite got those millions then you are allowed to lose against the big-boys when those games come around.
"Expectation is great in this game and the greater the expectation the bigger the disappointment.
"I think what has happened today is the level of improvement in a team is much smaller than the need to spend.
"If you spend £30million you only get two per cent better and that is what people don't realise, they want you to get 20 per cent better."
Sunday's trip across London to face Chelsea will be one of only three fixtures for the Hammers throughout the month of March due to FA Cup elimination and the upcoming international week.
"We knew the situation, we have managed situations like this at international times," he said.
"All we can do is do what we did last time we played and try and win because then it makes the two weeks pretty pleasurable to handle it and get through it.
"We have got exactly the same situation on Sunday when we have two weeks again before we play West Brom and we have got to try and handle it the best we can.
"I would rather have played last weekend but I'm not sure about playing Thursday night and Sunday because that is the hardest thing to overcome.
"Whether you have a good result or a bad result in Europe it is always very difficult to get the players to a top level of performance but Chelsea have been doing that for years now."
West Ham will still be without skipper Kevin Nolan, midfielder Mark Noble and former Chelsea man Joe Cole.