
Arsenal’s fluctuating level of success under Arsene Wenger has seen many superstars leave over the years. Thierry Henry, Ashley Cole, Kolo Toure, Cesc Fabregas and Robin van Persie are some of the most notable names in a long list of players who left the club and became incredibly successful.
However, there are two sides to every story. While the success story is familiar to everyone, on the flipside, there are a few stars who left the club only to see their career spiral downwards for varied reasons.
#4. Alex Song

Alex Song joined Arsenal in 2005 and left the club in 2012 to join Barcelona. During his stint with the Gunners, he played 215 games and made a reputation as one of the best defensive midfielders in the league.
After two underwhelming seasons at Barcelona, he was sent on loan to West Ham where he only managed to play 46 games in all competitions across two full seasons.
In 2016, Barcelona let Song join Russian side Rubin Kazan on a free transfer – four years after spending £15 million on him.
However, he was still contracted to Rubin Kazan and Song failed to return to the club after the winter break ended. On 2 April 2018, Rubin sent a complaint to FIFA dispute resolution chamber seeking a compensation of €40 million from Song for breach of contract.
#3. Thomas Vermaelen

He is also part of Belgium’s World Cup squad. So then, how exactly did his career go downhill?
Vermaelen’s career has been plagued with injuries since leaving Arsenal. In fact, he has been out injured for a period of 417 days after moving to Barcelona, and this includes the one season he spent on loan at AS Roma.
At least, he’s still playing for a club in the Champions League.
#2. Bacary Sagna

Several former Arsenal players have joined Manchester City in recent years with Sagna being the most recent one.
At Manchester City, he only played 16 games across all competitions in his first season and 86 games overall in three full seasons, before being released as Pep Guardiola deemed him surplus to requirements.
For nearly 8 months after he was released by Manchester City, he was unable to find a new club and when a club wanted him, it was Serie A’s 20th placed club Benevento, which picked up only 21 points in 38 league games and spent 36 straight match days at the bottom of the league table.
Now 35, it might be time for Sagna to hang up his boots.
#1. Samir Nasri

Nasri was one of France’s biggest talents when he joined Arsenal in 2008 and he was part of the PFA Team of the Year in 2010/11 while he was still at the North London club.
He was out of action for most of the 2015/16 season with an injury and after the arrival of Guardiola, he was sent on loan to Sevilla for the 2016/17 season.
Five months later, his contract was mutually terminated after playing just 8 games and scoring two goals for the club.
Aged 30, Nasri should have been hitting the peak years of his career but instead, he finds himself without a club and banned from football.