Olsson has returned to his best at the start of this season after an Achilles injury contributed to a below-par end to the last campaign.
McAuley said: "He's been fantastic for us. Last season he kept putting himself in the firing line for the club but he did have an injury. He had an issue and hopefully that has cleared up now and he's back to his own high standards.
"He would have been frustrated that he didn't reach the levels he would expect from himself but it's great that he's back out there now and leading us."
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