Nottingham Forest are reportedly interested in signing Flamengo defender Leo Pereira, a move that could hint at a formation change for the club next season. Vitor Pereira, the Nottingham Forest manager, previously worked with Leo Pereira during his stint at Flamengo, where he used the defender in a back three. The Portuguese boss has shown flexibility in his tactics, transitioning between a back three and a back four depending on the opponent. Nottingham Forest have managed to tie down Murillo to a new contract, but fellow centre-back Morato faces an uncertain future. The club only finished five points above the relegation zone this season, but Vitor Pereira's time in charge so far has earned him the backing of owner Evangelos Marinakis. Vitor Pereira oversaw just three Premier League defeats when he took charge in February, and led Nottingham Forest to the semi-finals of the Europa League. The manager's past comments on Leo Pereira suggest that he values the defender's ability to play in a back three, saying 'Players like Leo Pereira have the characteristics, the passing range, and the intelligence to make a three-man defence work.' Vitor Pereira was full of praise for Leo Pereira during his time in Brazil, and his admiration for the defender may help him avoid a difficult start to next season. Former Manchester United chief scout Mick Brown told Football Insider that Vitor Pereira needs to get off to a positive start next season to keep his job. The club may also have to adapt to the potential loss of midfielder Elliot Anderson, who has been a vital component for Nottingham Forest in his deep-lying midfield position. Manchester City have reportedly submitted a bid worth £106m for the 23-year-old, and Nottingham Forest now have to decide whether to accept the offer.