The Brazilian enjoyed an excellent debut season at the Emirates, finishing the season with ten goals in all competitions.
Martinelli has played a centre-forward and on the left wing at Arsenal and the 19-year-old revealed although he was happy to play wherever Arteta told him to, his favourite position was out wide.
‘I like to play open and I play quite centrally, but I prefer to start wide,’ Martinelli told Youtube channel Desimpedidos.
‘But my preference is always just to play, centre-half, full-back, goalkeeper, I just want to play.’
‘Arteta is the boss,’ he continued. ‘I am trying to follow his path in being an idol at the club, winning trophies and being captain of the club.
‘I have just signed a five-year contract here and I will stay five years here, and if they renew with me again I will stay at this club. I love, I love this club.
‘I dream of winning the league and the Champions League here.’
Martinelli was sidelined during the last weeks of the 2019/20 season due to injury and the teenager is expected to miss the rest of the year to a knee problem.
As FA Cup winners, Arsenal will be looking to begin the season with silverware and new signings Willian and William Saliba could make their debuts for the club against Liverpool.