The 23-year-old has impressed with the Seagulls this season and the Sun reports that his development has caught the eye of Mourinho.
Brighton are likely to hold out for a big transfer fee and are expected to demand £45 million for his signature – a fee that could rule Roma out of the running.
The defender, who has a contract until June 2024 with the south coast club, has made 33 Premier League appearances this season.
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