Premier League interest is growing in Fluminense defender Nino.
Nino is a top January target for Nottingham Forest, but they will face competition ahead of the winter transfer window.
Trivela says Forest intend to trigger Nino's €7m buyout clause in the New Year. But a knee injury suffered last month has left Forest "worried".
But Forest have reached personal terms with the player.
Two other Prem teams are keen, though haven't been named.