Gabriel Martinelli is reportedly expected to be fit for Arsenal to face Manchester City after picking up a foot injury. The Brazilian international missed the north London side’s 2-1 win against Brentford on Saturday after suffering a cut to the foot in Arsenal’s 6-0 thrashing against Sheffield United earlier in the week. With Martinelli also ruled out tonight’s massive UEFA Champions League clash against FC Porto, fears had emerged amongst Arsenal fans that the 22-year-old’s injury could be worse than first imagined. Journalist issues massive Gabriel Martinelli injury updateHowever, according…