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Few contenders boast the stability of Arsenal's centre-back partnership.
It is a good feeling to be able to talk about Arsenal's defence as a strength. After too many seasons of calamity across the back four, Arsenal now boast real stability and solidity defensively.
None of Arsenal's top four rivals can say the same. Chelsea have huge question marks over who to play next to John Terry.
They are currently chasing FC Porto star Eliaquim Mangala, according to The Daily Mirror. Thankfully, somebody has informed them that Gary Chaill's reputation might be ever so slightly inflated.
Returning manager Jose Mourinho also has issues at full-back. The EPL's other financial powerhouse, Manchester City, have their own things to fix at the back.
Finding a commanding stopper to partner the superb Vincent Kompany is paramount for new chief Manuel Pellegrini. As for Manchester United, it is anybody's guess who will occupy three of the four positions along their back line.
Centre-backs Rio Ferdinand and Nemanja Vidic have both seen better and certainly healthier days. Left-back Patrice Evra is also lurching towards the scrapheap.
By contrast, Arsenal's defence appears set. Per Mertesacker has become a key figure, despite hardly any of his own team's fans being willing to acknowledge it.
Laurent Koscielny improved considerably late in the season. He is not the blend of Paolo Maldini and Franco Baresi many fans have chosen to anoint him. But Koscielny forms a good complementary partnership with Mertesacker.
There are noises about a potential move to Barcelona or Bayern Munich. However, while Koscielny's agent did not rule out a move, he did say talks have not taken place. It is time for the former FC Lorient centre-back to repay Wenger's faith.
At full-back, Bacary Sagna's future is not certain, but there is no concrete evidence suggesting he will bolt for the riches in France.
Kieran Gibbs has become one of the finest left-backs in the country. Better still, Arsenal have options in defence—real, credible options.
Nacho Monreal is an able deputy for Gibbs, while Carl Jenkinson or youngster Hector Bellerin could succeed Sagna.
Wenger and assistant Steve Bould suddenly have some riches to work with at the back. This unit will keep Arsenal tough to beat, and their continuity will prove vital in the title race.