France World Cup winner Raphael Varane on Tuesday announced his retirement from football at the age of 31.

Former Real Madrid and Manchester United centre-back Varane had joined Italian club Como for this season but was then excluded from their Serie A squad having suffered a knee injury in August.

"A new life begins off the pitch," Varane said on social media.

"I will remain with Como. Just without using my boots and shin pads.

"Something I am looking forward to sharing more about soon," the four-time Champions League winner added.