The sight of Hector Bellerin being stretchered off the pitch against Chelsea was a hard one to take for everyone connected to the club.
It has since been confirmed that the Spain international will miss between six and nine months after rupturing the anterior cruciate ligament of his left knee.
But Unai Emery is backing Bellerin to come back stronger.
"Yes, we were sad and we are sad now after his injury," Emery said. "I think this year is very difficult for big injuries like Hector, Rob Holding and Welbeck.
"But football is like that. We need to treat these injuries like a normality in football, but we are very sad for that.
"Hector Bellerin is very mature and I think he received this injury like a football professional can take and he is already preparing to come back stronger than before."
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