England legend Shearer says Guendouzi was a "warrior" in midfield with his team down to 10 men.
On Match of the Day, he said: "When you consider they went down to 10 men, the change in attitude was incredible.
"Guendouzi was magnificent in the second half, they needed a warrior and he stood up.
"We've questioned Arsenal's character enough time and we've got to give them praise. What a performance in the second half."
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