Robert Pires only won twice at Stamford Bridge during his six-year spell with us, so he knows exactly how tough it will be against Chelsea on Saturday.
The Arsenal legend believes this is a make-or-break game for Arsène Wenger’s side and says we need to keep one man quiet in particular.
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“For me this is a final for the Premier League,” Pires said. “If Chelsea beat Arsenal it's done, the Premier League. But if Arsenal beat Chelsea at Stamford Bridge, anything is possible.
“The key for this game is the battle between Laurent Koscielny and Diego Costa. Koscielny is one of the best in the Premier League. Diego Costa loves to defend the ball, loves the fight and is a very good striker.
“So this is the key at Stamford Bridge: Koscielny v Costa.”
With thanks to the Premier League
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