Neves has emerged as a target for United in recent months and reports earlier this week suggested Benfica would not accept anything less than his release clause to let him go, which currently stands at €100m (£87m/$110m). However, O Jogo reports that extension talks are ongoing, having begun last month, and his release clause could rise to £130m ($166m). A deal at that price would make him the most expensive player in Premier League history.