"I was always very happy at Chelsea," the 32-year-old told ESPN Brazil .
"And then the understanding of knowing that my cycle was over, even though I thought it wasn’t going to end that way, in a quick decision.
"I decided to leave Chelsea before I even had the door open at Arsenal.
"I know that Arsenal weren't in a great moment, they had a weight on their defence, [when] I go there I’ll have to pay the restaurant bill without having eaten.
"But I’m going because I want something new for my life, I want to learn."
"My respect and love for Chelsea has always been true.
"It was difficult to deal with the emotional part, then playing, things were not happening on the pitch, the results weren’t coming.
"Unai is a great coach and a great person, but things weren’t happening for him either. So you get into a stir and try to stay upright and strong.
"And I often wondered why this decision was made. Why is this happening?"