ARSENAL begin their Champions League campaign with a trip to Napoli.

But the Italian side are without their star man .

SOCCER - Serie A - SSC Napoli vs. Como 1907 - 30 Aug 2026Scott McTominay is not playing for Napoli against Arsenal Credit: Splash Gran Gala Del Calcio 2026, Milano, Italy - 02 Sep 2026Scott McTominay and partner Cam Reading attended the Gran Gala del Calcio last week Credit: Shutterstock Editorial

Since making the move to , the Scotland midfielder has become a cult hero after winning the Serie A title and Player of the Season award in the 2024/25 campaign.

They will instead be relying on Kevin De Bruyne and Rasmus Hojlund against tonight.

Why is Scott McTominay not playing for Napoli vs Arsenal?

McTominay is not playing tonight after .

The former Manchester United star was diagnosed with “”.

is described by the NHS as “when your heart beats too quickly or too slowly, or your heartbeat is not steady”.

Cardiac arrhythmia ablation treatment will fix the issue by blocking faulty signals and restoring a usual heartbeat.

The condition is not serious or life threatening.

When will Scott McTominay return to action?

Napoli confirmed this week that McTominay’s heart surgery “was a complete success” and expect the midfielder to return to training this month.

McTominay has not played since August 30.

He is expected to return after the upcoming international break.

It is a huge blow for Scotland and new boss Sebastien Pocognoli.

McTominay will miss four Nations League games against Switzerland, North Macedonia and Slovenia twice.