Arsenal are in talks with an architecture company over expanding the Emirates Stadium, according to a report.Photo by Mike Hewitt/Getty ImagesSam Cunningham reports for City A.M. that Arsenal are in talks with architects Populous over expanding the Emirates Stadium, having previously worked with the same company to design the Emirates in the first place.Sources claim all options remain on the table at this stage, from major works to minor hospitality upgrades to increase revenue. With how well things are going on the pitch, club executives are reportedly feeling no pressure to make a final decision.As well as the Emirates, Populous…