Alejandro Balde Martinez is reportedly at the centre of ongoing transfer discussions between Manchester United and Barcelona - according to a number of reliable sources. The defender has attracted serious transfer interest in recent weeks, and talks are now in progress to see if there's a deal to be done. Sources close to the deal suggest negotiations are active, with both sides working to find common ground over the player's potential move. Aston Villa, Manchester City and Liverpool have not withdrawn their interest and could still influence the outcome. Alongside this, Barcelona are said to be exploring Ayoze Perez, Viktor Gyokeres and Luis Suarez with Manchester United likewise connected to Antony Santos, Giorgio Scalvini and Ezri Konsa. More on this story as it develops. Need more Manchester United transfer rumours? Follow @PlayerSwitchCom on Twitter for up-to-the-minute news from Manchester United.