Liverpool are said to be in formal negotiations with Celta Vigo over the signing of Oscar Mingueza. The defender has been a target for some time, and talks are said to be intensifying as the window progresses. The player remains under contract, but movement looks increasingly likely the longer talks go on. Until a fee and conditions are finalised, the deal remains vulnerable to disruption - especially if Arsenal, Juventus and Marseille decide to make a formal offer of their own in the coming days. Defensively, Liverpool are sitting around the league average this season, at 1.35 goals conceded per game. Someone like Oscar Mingueza could keep them steady but also raise the level when it matters most. Reports suggest Liverpool are monitoring Francisco Fernandes Conceicao, Harry Wilson and Bazoumana Toure whereas Celta Vigo have not been associated with other players at this stage. Want more transfer rumours like this? Follow us on Twitter @PlayerSwitchCom for up-to-the-minute transfer news direct to your feed.