Knol to see specialist
By Mitchell Glorie
Last Updated: 01/01/70 1:00am
The talented defender has been out for over nine months with the problem, and was told to halt his training programme last week when complaining of pain in the joint.
His cartilage has been troubling him for some time, with the area filling with fluid after training.
Knol will see a specialist on Tuesday, where a decision will be made on whether to undertake another operation.
The 22-year-old had been tipped as a future Holland international after breaking onto the scene a few years ago, but his progress has been halted by a knee injury.