People who have impressed me:
Guillermo Ochoa (Mexico, Goalkeeper) - Made a very good save towards the end of the game against Cameroon and was unbelievable against Brazil, MOTM. Probably wouldn't move for him as he would take DP wages and isn't a world name and is a keeper. Also, he is playing in a top European league (Ajaccio in Ligue 1) and is very young for a keeper.
Fabian Johnson (USA, Right Back) - Fantastic performance, lots of pace and did not stop running. Just moved to Gladbach though I think so would also be unlikely.
Jason Davidson (Australia, Left Back) - Had a good, solid game at left back. Defensively sound and tried hard to get forward when he could. Only 22. Plays for Dutch side Heracles Almelo.
Carl Medjani (Algeria, Centre Back/Defensive Midfielder) - Shielded the back four excellently and passing was good too. Faded towards the end though. Plays for Valenciennes, on loan from Monaco.
Mehrdad Pooladi (Iran, Midfielder/Full Back) - Had a very decent game when played at left back against Nigeria and their pacy forwards (Moses, Musa, Emenike). Probably man of the match, albeit in the worst match of the tournament. Plays for Persepolis in Iran.
Jorge Valdivia (Chile, Midfielder/Striker) - Tricky little attacker, scored a nice goal and very nearly assisted another with a lovely backheel. Plays for Palmeiras in Brazil.
Enner Valencia (Ecuador, Striker/Winger) - Fantastic in the air and covers the ground quickly, scored a very good goal against superior side Switzerland. Plays for Pachucho in Mexico.