Fremantle rookie Stefan Giro will miss the next four to six weeks after injuring his right knee playing in Peel’s WAFL practice match against Subiaco on Saturday.

Read how Freo's young players fared for Peel on Saturday

“Stefan had scans yesterday, with the subsequent report confirming a grade two strain in the medial ligament in his right knee,” general manager of football operations Chris Bond said.

“Fortunately, Stefan does not require surgery but our medical advice is that the rehabilitation phase will be between four to six weeks.”