The report states, however, that Martinelli is still waiting to obtain his Italian passport which is expected in the next four weeks.
Arsenal have paid around £5m for the forward’s signature.
Other clubs said to be interested in signing the starlet were Leeds and Barcelona.
Martinelli’s agent, Marcos Casseb, spoke about the potential transfer recently.
Gabriel Martinelli could be on his way to Arsenal in the summer (Image: GETTY/ITUANO FC INSTAGRAM )
Martinelli plays for FC Ituano in Brazil (Image: ITUANO FC INSTAGRAM )
“To be honest we expected this to happen,” he told Globo Esporte.
“His evolution since last year is very fast, he is above average.
“The initial planning is for him to go straight to Europe.”
Arsenal have also been linked with signing the likes of Ivan Perisic and Yannick Carrasco from Inter Milan and Dalian Yifang.
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Unai Emery wants to sign new players this summer (Image: GETTY )
Yannick Carrasco has been in China with Dalian Yifang (Image: GETTY )
Deals for the two players could not be reached during the January transfer window, when manger Unai Emery admitted that only loan deals were possible.
The Gunners settled on signing Denis Suarez from Barcelona until the end of the season but the Spaniard hasn’t performed well since joining and is expected to head back to Catalonia.
Carrasco recently hinted that he was interested in a return to Europe, having previously played for Atletico Madrid.