Martin Keown has that he has huge questions marks over Arsenal's defence.
The former Gunner highlighted the performance in the North London Derby against Tottenham Hotspur as the perfect example of the way Unai Emery's side left themselves exposed in defensive areas.
The game ended 2-2 at the Emirates Stadium and speaking to the Daily Mail, Keown said that it's always a worry when your most defensive player is your star striker.
He said: "There are question marks for Arsenal defensively.
"We know all about their attacking strength, and Nicolas Pepe's arrival makes their forward line even better, but there remains uncertainty at the back.
"There were times when David Luiz was left on his own against Spurs, and you can't have that.
"Sokratis left a big gap for Christian Eriksen's opener after abandoning his position in a bid to win a header.
"The most defensively minded player on the pitch was Alexandre Lacazette!"
Adding to Martin Keown's point, Chris Sutton said: "Arsenal are good going forward, but vulnerable at the back. Those same frailties are still there. David Luiz does not fix that."
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