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Manchester United midfielder Ander Herrera has warned his teammates not to look past Thursday's Europa League opponents Celta Vigo.
United go into their semifinal tie as favourites ahead of Celta, who currently sit in 11th position in the La Liga table.
Herrera has likened the Spanish side to the Athletic Bilbao team he played at under Marcelo Bielsa -- one that won 3-2 at United five years ago in the Europa League.