The universal way of showing respect to your former club is by refusing to celebrate when you score against them.
However, Sergio Aguero has gone a step further than that.
In fact, the Argentine has gone way beyond that by buying his old team a brand new training ground.
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Aguero played for Independiente in his native country for four seasons before being signed by Atletico Madrid in 2006 in deal worth around £18 million.
He realises that his time playing in Argentina has allowed him to go on to become one of the best strikers in world football.
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Since leaving Independiente, Aguero has scored 227 goals for Atleti and current club Manchester City, winning two Premier League trophies and a Europa League.
But the 27-year-old isn’t one to forget his roots.
In December, Aguero told City that he would leave England to return to Argentina when his deal ends in 2019.
"I will return to Independiente when my contract with City expires,” he said in an interview with French football magazine So Foot, per Sky Sports.
"I do not want to make my comeback when I am too old. If everything goes well, I will return to the club of my heart at the age of 31.”
Move to Real?
However, it’s not guaranteed that the forward will stay at City until his contract expires.
Earlier this week, Football Leaks revealed the details of Aguero’s contract and it was identified that there was no clause stating that he couldn’t move to Real Madrid, as previously thought.
But it appears almost certain that he will one day be turning out for Independiente again.
And when he does return to his former club, Aguero will have the pleasure of training in brand new facilities thanks to his generosity.
As you’d expect, the Argentinian club was extremely grateful.
“This is so important for us," said Independiente president Hugo Moyano of Aguero's gift, per the Mirror.
"He will be recognised for the rest of Independiente history.”
City record books
While Moyano insists that Aguero will go down in Independiente history, he will also go down in Manchester City’s history.
In Aguero’s debut season in England, he had already notched 29 goals going into the final match of the season against Queens Park Rangers.
City knew three points would be enough to seal their first ever Premier League title and their first top-flight triumph since 1968.
They entered the 95th minute drawing 2-2, still desperately needing a goal. And it was Aguero that produced a dramatic winner sending the Etihad into raptures and creating one of the most memorable moments in English football history.