All eyes are on the Etihad Stadium this Sunday as Manchester City prepare to host Arsenal in a Premier League showdown that could define the title race. With the gap at the top now just six points, Pep Guardiola's side knows a victory would send a seismic message. But as the tension builds, the fitness of key players is paramount.

Ahead of the colossal clash, Guardiola has provided a crucial squad update. While defender Rúben Dias remains sidelined with an ankle injury, the news on young star Nico O'Reilly is positive. The 21-year-old, who was a doubt after being substituted against Chelsea, has trained this week and is available for selection.

"Ruben is not ready still but Nico is fine," Guardiola confirmed in his pre-match press conference. "I prefer to have everyone available but during the season, there are always injuries."

O'Reilly's availability is a major boost for City. Having broken into the first team this season, his versatility and attacking threat from left-back or midfield have been invaluable. He's already notched five goals and three assists in the league and famously scored in the League Cup final victory over this same Arsenal side last month, proving he can deliver on the biggest stages.

This fixture is more than just three points; it's a psychological battle. City, capitalizing on Arsenal's recent stumble, have momentum. Having a dynamic, confident player like O'Reilly ready to contribute could be the difference-maker in a match where every duel, every run, and every moment of quality will be magnified under the title-deciding spotlight.