Arsenal could be set to sell several fringe players this summer, and a number of players out on loan have not done enough to earn another chance. The likes of Charlie Patino and Kieran Tierney have spent the season elsewhere, but failed to show Mikel Arteta why they deserve to be in the Arsenal first-team going forward, and could prove to be profitable sales. Midfielder Albert Sambi Lokonga faces a similar situation, as he is currently on loan at Luton Town FC, where he has thrived at times in their maiden Premier League campaign under Rob Edwards. However, it still seems unlikely that Lokonga…