Amid the good news of Thomas Partey returning for Arsenal this weekend, Mikel Arteta has also provided news of an injury set-back. Arsenal travel to Sheffield United on Monday with a strong squad, buoyed by the fitness of Gabriel Jesus too. Jesus is thought to be ready to start the game, a selection dilemma that has rarely landed Arteta’s way this season. And with Thomas Partey also now available, Arsenal will have a strong bench one way or another. Of course, with the ‘business end’ of the season approaching, these boosts will be incredibly welcome. Arsenal’s second leg against Porto is sched…