The regret of my life — Arsene Wenger opens up on biggest Arsenal mistake

Wenger spent a hugely successful 22 years as Arsenal boss from 1996 to 2018, leading the North Londo side to three Premier League titles and seven FA Cup trophies.

Despite his success in England, the legendary Frenchman has revealed that letting Ashley Cole join Chelsea will go down as the 'regret of his life'.

Cole left Wenger and Arsenal to join London rivals Chelsea and quickly established himself as one of the best left-backs in world football, helping the Blues win multiple trophies, including the UEFA Champions League.

I would say one of the players who left Arsenal who had a very big career after Arsenal is Ashley Cole," Wenger said on the Seaman Says podcast.

 "He was the only one who moved on and fulfilled his career and it was a regret of my life.

‘Recently we had a meeting, I was glad he was in the meeting because he had a bad feeling and I had a regret that he left the club at the time.’