The Brazilian was pleased with his performance and hopes to start in the final game of the season on Sunday.
He said, "So amazing. I'm always ready to come on and when I score, I'm so happy.
"Yeah, it felt so good. I cannot wait to be at the Emirates and play in front of our fans."
Martinelli is happy their Europa League chances are still alive.
"Yeah, we need to finish well this season. We need to prepare and beat Brighton and show the fans a good performance."
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