Amid all the defensive juggling at Arsenal, blame should not be forgotten with regard to the man who walked out on them, and for what?
Arsenal have had back luck defensively this season as they shuffle their options to cope with their absentees.
Manager Arsene Wenger last night told BeIN Sports that his team was unbalanced thanks to the loss of Mathieu Debuchy to injury, but the former Newcastle star was only signed because Bacary Sagna decided to walk out on them.
Long-term, Debuchy may turn out to be a better player than Sagna, but in the short-term, it's a hassle which has come about as a result of him leaving.
Arsenal tried hard to convince Sagna to stay at the club, having been at the club since 2007.
The 31-year-old however decided he preferred to leave on a free transfer to sign with Premier League rivals Manchester City instead.
And where has it got him? Sagna as many predicted, has been unable to dislodge the excellent Pablo Zabaleta from the team.
He has started only three Premier League games out of a possible 11, and played one as a substitute. City have won only one of these four.
In short, Sagna's desire to leave has taken him out of Arsenal's starting line-up and onto Manchester City's bench. He is no closer to winning a much-craved Premier League title either.
City sit eight points behind runaway leaders Chelsea, and look set for a group stage Champions League elimination.
While he ponders whether he made an error or not, Arsenal continue to struggle to get by until Mathieu Debuchy returns, said to be mid-December.
It's as if a problem has been unnecessarily created at Arsenal through his own impatience for trophies, with Arsene Wenger resultantly re-assessing the right-back spot and sending Carl Jenkinson out on loan after Debuchy was signed.
Perhaps even more crucially, unlike Nacho Monreal, Bacary Sagna actually could play in central defence adeptly, and did so when required by the Gunners.
In the short-term and with hindsight Arsenal could really have done without his refusal to agree a new deal, and from his perspective it's not exactly been a success either.