Lyonnes striker Liana Joseph is set for a lengthy spell on the sideline after being diagnosed with a torn ACL.

Joseph, 19, endured the injury during the French club's UEFA Women's Champions League clash with Arsenal on Tuesday night.

The French forward came on as a substitute during the tie at Meadow Park, only to have to be subsequently replaced herself.

Lyonnes went on to defeat the reigning champions 2-1 in London.

On Friday, the club confirmed that Joseph had been sent for a scan, which revealed the tear.

"OL Lyonnes confirms Liana Joseph's knee injury against Arsenal," said the club in a statement.

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