Barcelona forward Ansu Fati travelled to Portugal this week to undergo a fourth intervention to try and fix the problem with the meniscus in his knee.
Ansu was first operated on in November after getting injured in a game vs. Real Betis. Further action was taken in January and again in March when his recovery didn't go as planned.
The Spain international will not play again this season but Barça haven't put a timeframe on when he could return to action.
A statement from the club said: "After traveling to Porto, Ansu Fati has undergone a check-up arthroscopy in his left knee by Dr. Jose Carlos Noronha, under the supervision of the club’s medical services. The player will continue with his recovery process.
"He is working hard to overcome the injury to the internal meniscus of his left knee that occurred last November and which forced him to undergo surgery. Before the injury, he played 10 games this season, in which he scored five goals, the last of them coming in the Camp Nou Clásico against Real Madrid."
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