"I think it is very important for us to beat Chelsea on Sunday. If we do that, it shows not only them but also Manchester United that we are serious," said Kuyt.
"We showed last season that we were close to them and hopefully we will prove we're even better this time.
"We don't only want to do it in the big games but in the others as well - but first we need to win against Chelsea because that will make the perfect statement at this stage of the season."