Johnson turns 30 in two months. Despite missing three games last season with ankle and finger injuries, he still caught 71 passes for 1,077 yards and a team-leading eight touchdowns.
Johnson said he still has several good years left in him.
"No doubt," he said, according to the Detroit Free Press. "What did I miss, four, almost five games last year? Still came up with just over 1,000 [yards]. I still have some [good years] left."
He isn’t worried about turning 30 either.
"Not really," he said. "It's a mindset more than anything. If you have injuries, it's tough. But I'm feeling good right now."
Johnson, a five-time Pro Bowl receiver and three-time first-team All-Pro selection, has 643 career receptions for 10,405 yards and 74 touchdowns in his eight NFL seasons.
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