Alexis Sanchez scored twice and missed a penalty in an influential performance for Arsenal on Saturday against Hull City.
The Chilean looks back to his best form after a patchy campaign last season in which he missed two months with a hamstring injury.
But the 27-year-old has just two years left on his current contract, and according to the Daily Express, Manchester City is monitoring his situation closely.
Sanchez was signed by City’s current manager, Pep Guardiola, for Barcelona in 2011, from Italian club Udinese. He scored 39 goals in 88 games for the Catalans but his time at the club was punctuated by injury.
Arsenal manager Arsene Wenger wants Sanchez to sign a new deal this season. But Guardiola looks set to pounce should he dally. The Spaniard could do with another forward to complement Sergio Aguero and Kelechi Iheanacho, with Sanchez able to play anywhere along the forward line, including as a central striker.
Arsenal is doing well right now in the Premier League. But City’s interest in one of the club’s main assets may become a distraction, unless Sanchez commits his future to Wenger.