Lens are flying in Ligue 1 right now, so will be dreaming of a first Coupe de France title since 1998 come 29 April.
On Saturday, Franck Haise’s team beat Auxerre 1-0, with Przemysław Frankowski’s penalty the difference at Stade Bollaert-Delelis.
That victory means les Sang et Or are now unbeaten in nine league games, winning seven of then, most-notably demolishing PSG 3-1 on New Year’s Day.
As a result, Lens currently sit second in Ligue 1, on track for their highest finish since 2002.
In the cup, Seko Fofana and Florian Sotoca were on target as Lens overcame fifth-tier Linas-Montlhéry in the previous round.
This though should be a sterner examination, up against fellow top division opposition.
Stade Brestois though are struggling in Ligue 1 just now, occupying the final relegation place, following a 1-1 draw with Toulouse at the weekend.
Les Pirates have now won just two of their last 16 league games, only beating Clermont Foot and Troyes since mid-August.
Eric Roy’s team did oust third-tier Avranches in the round of 64, Pierre Lees-Melou and Axel Camblan scoring, but are big underdogs in this Sunday night clash.
Lens won 3-2 when these two clubs met on the opening day, with the same outcome likely, this time at Stade Francis-Le Blé.