Whenever a new Premier League champion is crowned, they always seem to pick up the complacency virus. Manuel Pellegrini must banish it next season to retain the Premier League's dignity.
When Sergio Aguero scored his memorable last minute winner to end Manchester City's 44-year wait for a league title, their naivety of trying to retain it the following season showed.
Roberto Mancini lost his job and Pellegrini was appointed. The Chilean went on to win the double in his first season, but there shouldn't be much sympathy for their whimper of a challenge to Chelsea last year.
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Poor transfer market
Their lack of additions in the transfer market after they won the league in both occasions cost them.
When Mancini was appointed he brought in the likes of Samir Nasri, Gael Clichy and Sergio Aguero - all of whom massively enhanced their title credentials.
The Italian recognised they needed to strengthen in order to compete while weakening a potential title rival in Arsenal.
Yet the current Inter Milan manager didn't apply the same principles in the next campaign in order to retain it. Jack Rodwell, Scott Sinclair, Maicon, Matija Nastasic and Javi Garcia were all purchased - none of which are still at the club today.
Why? They weren't good enough. They weren't good enough to go and retain a Premier League. They didn't spark a team who needed a breath of fresh air after a mentally draining season.
Pellegrini came in and he followed suit. Fernandinho, Jesus Navas, Alvaro Negredo, Steven Jovetic and Martin Demichelis were signed and led them to City's second league title in three years.
Once again, though, they made the same mistake. Despite having a different manager at the helm. Bacary Sagna, Fernando, Willy Caballero, Bruno Zuculini, Eliaquim Mangala and Frank Lampard were added.
Fernando and Mangala didn't fix the problems in the spine of the team and allowed Chelsea to ease to the title.
You're probably getting the picture now, but could that pattern happen again?
Raheem Sterling, Nicolas Otamendi and Kevin De Bruyne were purchased in the summer. Three blockbuster signings showed City meant business again.
You can bet the Citizens will probably go and win the league again now, but why didn't they do that after the first time they won the title or the second? Will they learn from their mistakes this time?
They're not the only ones
In fairness to Pellegrini, City aren't the only ones. Not that it's an excuse, but Chelsea did the same this summer. They failed to improve when they were strong and now they're paying for it.
It's complacency. How can they assume just because they're the champions that they don't need to purchase anyone?
It's the most important time to strengthen. You're rivals are going to want to seek revenge, so they will spend. The squad has just gone through an exhausting season physically and mentally. Plus, the players are a year older.
The team needs a buzz. Some people can't understand why a team isn't motivated to win the league again. Surely players want to win titles and be remembered for years to come. They're getting paid handsomely enough too. Unfortunately, it's not as simple as that.
When a team goes through a Premier League winning season, every player is putting every ounce of energy into winning matches. Scrapping for every tackle, pass and header of every minute of every game.
To replicate that the following season, it's just too difficult for most people. Understandably too. To think, before the season starts you have to go through the same process all over again, to win the same thing that you won last year? It's far from easy.
Players need an extra boost of motivation. If they don't see a new star player walking into the training ground, heads will drop. The same players know they are on their own.
How do you think the City camp felt when they saw Garcia and Sinclair walk through the door? Or Caballero and Zuculini? They're hardly inspiring.
Then how do you think they felt when they saw Sterling and De Bruyne walk into the Etihad campus? Training steps up a notch because players know they're going to have to work that much harder to keep their place in the side.
Players aren't going to try as hard if they know their place isn't under threat when the likes of Sinclair and Garcia walk in.
City can't make the same mistake again next season. It is possible to have some sympathy the first time around because they didn't know what it was like to win a league title, let alone retain it.
The second time is just inexcusable, a third would be unacceptable. You can't be smug and expect titles to come to you. You have to go and grab them. Don't let it happen again Pellegrini.