If uv got about 10m in first season to spare, Juan Arango is really good for first season although gets injuries in next seasons so sell him after first season.
Bought him at Man Utd, very good cover for when Nani and even the strikers can't play.
Could easily play as starting left midfielder at any club lacking in one
Guardado is supposed to be one of the best prospects so... I also like Simon Poulson and also look in your reserves Francisco Merida is some player just mould him into a fully left winger