The 19-year-old has found his first-team opportunities to be limited this season despite having returned from a long-term injury earlier in the campaign.
Martinelli has looked sharp when he has been called upon this season but he has been limited to only a handful of starts in the Premier League for Arteta’s men.
The Brazilian will be hoping to hold down a more regular fixture in the first team between now and the end of the season as he looks to help the Gunners end the campaign on a positive note.
Martinelli made only his fourth Premier League start for the Gunners this season in their 3-0 win over Sheffield United on Sunday night, as he scored the north London side’s second goal.