Crows forward Brett Burton is set the next 4-6 weeks after undergoing corrective surgery today to repair some cartilage damage in his left knee.
After returning from a training camp yesterday Burton saw a specialist after feeling soreness in his knee as a result from Saturdays NAB Cup defeat to Port Adelaide.
Crows football operations general manager Phil Harper said the injury is a re-occurrence to an injury he had a month earlier.
“The knee blew up after a hard week on the training track three weeks ago – and settled down after five days,” Harper said.
“Now, after the game, it has blown up again.
“He will be in a race against time to be available for round one but we have faith in our physical performance team to give him the best chance possible of taking the field against Freo.”