Ally McCoist has given his verdict on the performance of Arsenal winger Gabriel Martinelli against Crystal Palace at the Emirates Stadium. Former Chelsea player Andy Townsend was also impressed by the display produced by Martinelli in the London derby. So, what has been said about Gabriel Martinelli? Let’s take a look. Praise for Arsenal winger Gabriel Martinelli vs Crystal PalaceWell, Arsenal hammered Crystal Palace 5-0 at the Emirates Stadium in North London in the Premier League this past weekend. The Gunners were firm favourites headed into the London derby, and Mikel Arteta’s side never l…