North Melbourne has ruled Jarrad Waite out of its Round 14 clash with the Bulldogs this Saturday night, after the veteran forward re-injured his calf at training.

"He reported some pain again to the medical team during a session this week," GM football Cameron Joyce said.

"We'd given him a decent break, including the bye weekend, but he needs more time to recover and then continue to strengthen the area of concern.

"Given his age and injury history, it's important that we adopt a conservative approach and ensure that we have him back to full fitness and available to play."

Waite first injured the calf in the final warm-up ahead of the Kangaroos Round 11 match with Brisbane at Etihad Stadium on June 3. The 35-year-old missed the following Round 12 match against Geelong.

At this early stage, Joyce was unable to put a timeframe on his return.

"For now, he'll be listed as "TBC" on our injury list until we can get a clearer picture on his injury and expected recovery time," he added.