As it stands, Bilbao sit fourth in the table, six points ahead of fifth-placed Sevilla with just five games of the campaign remaining.
"The last Champions League spot will not be decided until the end. The home game against Sevilla will be massive," Inside Spanish Football quotes the midfielder as saying.
"We are even more excited to possibly solidify 4th place against Barcelona at the Camp Nou. When playing Barca there is much to gain and little to lose."
Herrera was strongly linked with a move to Manchester United last summer.