Arsenal are set to begin their pre-season campaign in the coming week, but questions remain over which academy stars will be involved. Arsenal under-21s have already been involved in two pre-season matches, with a 4-2 win over Boreham Wood followed by a 2-1 defeat to Enfield Town, with plenty of rotation. The likes of Ethan Nwaneri and Myles Lewis-Skelly will be aiming to make the trip to the USA with Mikel Arteta’s squad for their upcoming pre-season friendlies, but there are some players whose futures are uncertain, and their omissions could indicate upcoming departures from the club. This a…