(Reuters) - Chelsea manager Mauricio Pochettino was left frustrated by his team's inconsistency after their 5-0 thrashing at Arsenal in the Premier League on Tuesday, which came just days after they pushed Manchester City hard in a tight FA Cup semi-final loss.

Leandro Trossard opened the scoring at the Emirates before Ben White and former Chelsea player Kai Havertz both scored twice in the second half to seal the north London club's biggest-ever win in the fixture.