Marca says having gone under the knife on July 2, Felix will take the next step in his recovery from an ankle injury by returning to Madrid on Monday.
The Portugal star had surgery performed by Niek van Dijk in Porto after Euro 2020 came to a disappointing end, as he played on 30 minutes before his country were eliminated.
Having played through the pain barrier for much of last season, Atletico's physio's will work with him closely but will not take any risks.
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