Juventus have confirmed that midfielder Blaise Matuidi has tested positive for coronavirus.
The France international is the second player from the club to contract the illness, after it was announced on Wednesday that defender Daniele Rugani had been infected.
Italy international Rugani was confirmed as the first professional player in Serie A to contract Covid-19.
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Matuidi, a regular for the Serie A side this season, has been in voluntary isolation since Wednesday, and is following a similar procedure to his team-mate.
Italy has been in lockdown in a bid to prevent further outbreak of the coronavirus, which has already affected several Serie A players.