Zanetti spent 19 years at Inter Milan between the years of 1995 and 2014.
During that time he made 858 appearances, helping the Serie A giants win 16 major trophies along the way.
Manchester United were once keen on him to provide competition for club legend Gary Neville, though Zanetti turned down a move.
And the former Argentina international has revealed that he rejected a transfer to Old Trafford because of his love for Inter.
“There were some firm rumours of Manchester United wanting to sign me during the late '90s," he told Four Four Two.
Inter Milan legend Javier Zanetti rejected a move to Manchester United Players whose transfer plans stalled after failing medicals Wed, January 25, 2017
Click through the gallery to reveal which top players have failed medicals during their careers
Play slideshow GETTY 1 of 13
Click through the gallery to reveal which top players have failed medicals durin
"I once saw Alex Ferguson in an airport while I was in England with my wife.
“We talked a bit about football, but I was always centred in my idea of staying with Inter, even in those complicated years, and it would have been difficult for me to go under any circumstances.
“It wasn’t just Manchester United, there were other big clubs as well, but my love for Inter always tipped the scales.
“I was confident that their moment would eventually come. I would speak about it with President [Massimo] Moratti and my family.
Get Quotes on Home Insurance
Sir Alex Ferguson was rebuffed in his efforts to land Javier Zanetti
“Being captain, I wanted to leave an important mark on the club. Yes there were hard times, but the management showed trust in the squad being built and we worked together to achieve the goals we wanted for so long.
“When you sign for Inter, the club makes you think that you are part of a family, like a new son.”
United have struggled for a consistent right-back since Gary Neville retired back in 2011.
But the Red Devils finally appear to have found a solution to that problem, with Antonio Valencia flourishing in that position under Jose Mourinho this season.