Liverpool’s Champions League opponents Napoli have been instructed by Uefa to guarantee the suitability of their arena to host next week’s group opener.

The response from Europe’s governing body follows Napoli coach Carlo Ancelotti launching a tirade against those responsible for renovating the dressing room at the San Paolo stadium, where Liverpool play on Tuesday.

Ancelotti branded those entrusted with improving the facilities "incompetent" and his club posted a video on their website highlighting the poor conditions.

Although Liverpool have been informed the away dressing room is not affected, Uefa say they are talking to Napoli about the situation.

“We are liaising with the club to get all necessary assurances and guarantees that the dressing rooms and any other relevant facilities are ready and suitable for next week’s Uefa Champions League match,” said a Uefa spokesman.