GEELONG star Mitch Duncan is set to miss the next three months after scans confirmed a break in his foot on Monday morning.

The key Cat is likely to go under knife to fix the break in his fifth metatarsal which he picked up against Sydney at ANZ Stadium on Saturday night.

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Cats doctor Drew Slimmon said surgery was the best option to get Duncan back on the ground as quickly as possible.

“That injury often requires surgery and that’s what we are looking at doing for Mitch to give him the best opportunity of getting back as quickly as possible,” he said.

Duncan described the injury as “a bit annoying”.

“I was just running and went to change direction and felt a little pop in my foot. I thought one of my studs had actually come off, but that wasn’t the case,” Duncan said.