Allan admits fellow Brazilian Richarlison helped convince him about joining Everton.
The former Napoli midfielder completed his protracted transfer on Saturday.
Allan told evertonfc.com: "I talked a lot with Richarlison during the negotiations about coming to Everton. He was asking me, 'When are you coming? We need you here, come here'."
The 29-year-old played 61 matches under Everton boss Carlo Ancelotti during his time with Napoli and has also explained the quality he hopes to bring to his manager's side following their reunion and his desire to reward the fans.
He said: "I'm really happy to know the fans are excited about me coming here to Everton.
"I received a lot of messages from fans and that made me really happy. I'm confident in the work I can do here.
"In my style of football, I'm a very dedicated player, a player who looks to help their teammates and I hope in my time to get even more fans behind me.
"Without a doubt a strong part of my game is marking and desire to going in to win absolutely every balll, definitely a differential in my game and I believe with my desire I can put in performances to win the fans over and hopefully win things as well."