Arsenal may end up making some surprising first-team sales this summer as Mikel Arteta aims to strengthen the depth of his squad. Arsenal came agonisingly close in the Premier League title race but finished two points behind Manchester City, and better depth for increased rotation may have been the difference between the two teams. Arteta may now see this summer as an opportunity to clear out some of his fringe options to make room for more quality depth, and this could see some big names leave. Emile Smith Rowe is a candidate for the exit door given his lack of game time, whilst Thomas Partey…