Memphis joined Barca last week after signing in a Bosman deal from Lyon.
He told Sport: "I don't care if they say I'm a rebel.
"Sometimes, if you are a rebel on the pitch it can bring something extra and you win the game. Luis Suárez won so many games and scored so many goals, and not because he's the sweetest, nicest person on the field. Honestly, I'm not sure why being a 'rebel' has such negative connotations.
"I feel great. I feel blessed to be here. I've had an incredible welcome. Obviously, it's been tiring having to give so many interviews and attend so many events, but I'm doing it with enthusiasm and patience. I'm enjoying this first week and I enjoyed my first game."
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