The 46-year-old rejoined Real Madrid on Monday after the Spanish club sacked Santiago Solari.
According to Sport Mediaset, Zidane do not want to bring the midfielder back to the Santiago Bernabeu because the midfielder is not in his first-team plans for next season.
Kovacic joined Chelsea on a season-long loan in August after struggling to cement his spot in Madrid’s starting XI.
During Zidane final season at Real Madrid, the Croatia international started just 10 times in the La Liga.
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