The Brazilian fullback has quickly become a fans' favourite and he admits he has been touched by the support he has received.
"It was a big surprise how people accepted me here," he told Arsenal Player. "Especially when I was injured, a lot of people supported me and they were always asking when I was going to come back, saying that the team needs me and wishing me well.
"In the stadium people would see me in the stands and ask me to come back, there was also many 'Get Well Soon' messages on my Twitter account.
"All of that gave me the strength to carry on, and it all just contributes to my desire to work hard for this club and win titles in the red shirt."