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.