Chelsea boss Jose Mourinho has taken aim at great rival Rafa Benitez.
Napoli coach Benitez led Chelsea to victory in the Europa League last season, but Mourinho is unimpressed.
"The Europa League comes as a consequence of being eliminated in the group phase [of the Champions League]," he said.
"So I don't consider last year as a successful year because our competition is the Champions League. Last year was our worst year because it's the only time Chelsea have been knocked out in the group phase.
"We have already done better this season by qualifying through the group phase but what we did is normal - it's nothing special, nothing outstanding.
"We did what we had to do in a group which was not one of the strongest. We did our job."
