The club president explained Iniesta started "an era of winning in 2003 and until now has offered balance in the side, and while many players have changed, he always adds the balance".
"I have never before publicly commented on situations that are so complex and involve such diverse emotions, but this situation we are experiencing is exceptional", Iniesta wrote in a Facebook post.
But the 33-year-old Spanish global has now disappointed clubs like Chelsea, Juventus, Inter Milan who have been monitoring his progress at Barcelona.
Andres Iniesta says he will continue playing for as long as he feels he's important to the club.
Only Xavi Hernández has had more appearances, with 767.
"This is a very special day for me because I'm staying at home".
Barca then released a full statement: "Andres Iniesta signed a lifetime contract with FC Barcelona on Friday, in a deal that will keep him at the club for the rest of his career".
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He said: " Marouane Fellaini gave us a lot and especially these goals he scores he arrives in the box in a very intelligent way and he is very good with his head".
In fact, he even suggested that past year he had begun to pick up the first signals that maybe his career was coming to end.
Iniesta had been linked with moves to Juventus and Inter but his contract renewal means the Spaniard will end his career at the Camp Nou.
Iniesta joined Barcelona youth academy in 1996 as a 12-year-old lad before going on to make his debut for the club in October 2002.
Iniesta has recovered a leading role in Barcelona's midfield under new manager Ernesto Valverde in the opening part of the season. "It's true that time is against me and I am closer to hanging up my boots, but one thing I have clear is that I will be involved in football, I don't know how, but I will be related to football".
"Together with other bodies from civil society, we want to build bridges with dialogue that contribute to resolving the conflict in a peaceful and consensual fashion".
His Barca team have begun their 2017/18 La Liga campaign in impressive fashion, with seven wins from seven games.