The midfielder spoke after victory at Getafe yesterday. His new deal will run to 2018.
"Tomorrow is the day of my signature. Somehow or another it makes me very happy to renew, especially because winning makes me very happy. Contractually, when it finishes I would be 34 years old, it brings me closer to my retirement, but I hope that I am now performing equal or better than I have in the past," said Iniesta.