I think Herrera was an 8. They had the guy who went to Bayern playing behind, Javi something, and I think Oscar de Marcos was more the one playing at the tip. Then there was also Munain in that area.Herrera was actually mostly deployed an the most attacking midfielder at Bilbao, and actually played as left winger a good number of games too. Dunno how he ended-up becoming a center midfielder. Sometimes a player's career takes mysterious paths.