The left-back is currently playing back at home in Brazil on-loan with Vasco da Gama.
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And such has been his form that German giants Borussia Dortmund and Bayer Leverkusen are in contact with Forest about a price for Cuiabano, says O Globo.
Despite the Bundesliga interest, Forest are ready to cut all ties with the youngster.
However, it is Vasco which has the option to sign him permanently for &euro10m. Furthermore, Vasco holds a matching right, which allows them to match any offers from other clubs.