Liverpool defender Virgil Van Dijk insists their Champions League quarter-final is far from won and they will have to be better in Porto next week if they are to progress.

Unlike their last-16 clash just over a year ago, when Jurgen Klopp's side won the first leg in Portugal 5-0 to render the return fixture a formality, a 2-0 victory at Anfield still leaves some work to do.

Van Dijk knows they will have to put in an improved performance next Wednesday as their opponents have shown they can cause them the odd scare.