It would be impossible to speak negatively of Liverpool after blitzing Porto 5-0 away from home, right?You'd certainly think so but, then again, Roy Keane just can't help himself sometimes.The Reds played some of their finest football this season and even broke a Champions League record by securing the biggest margin of victory for an English side in the knockout stages. Manchester City were knocked off their pedestal in less than 24 hours.There were positives all round for Klopp's men with Sadio Mane raising two fingers to claims his form has dropped with a brilliant hat-trick.Naturally, Mohamed Salah and Roberto Firmino also scribed their names on the scoresheet in the latest reminder that Liverpool have one of the most fearsome attacks in European football.

Roy Keane speaks after Liverpool rout Porto

Furthermore, Liverpool executed a solid defensive performance at the Estádio do Dragão with Virgil van Dijk delivering one of his finest showings since his January move and complimenting Dejan Lovren perfectly.

Above everything else, though, it all but sends Liverpool through to the quarter-finals already and alleviates pressure from a busy run of fixtures which have forced Klopp into rotation recently.

What's not to like? Well, the aforementioned Keane always seems to have some cruel words for Liverpool on ITV's highlights show and a 5-0 win made it no different.

It's worth nothing that the Irishman had some due praise for Liverpool's attack but was keen to point out that the Reds, along with Tottenham, have lacked a little in the trophy department over the last decade.

One trophy in 10 years is 'embarrassing'

In the opinion of Keane, Champions League qualification and progression through the round of 16 are nothing when you can't deliver silverware. Take a look at his comments below:

Lee Dixon was keen to play devil's advocate and noted that his old club, Arsenal, find themselves in a rut despite three FA Cup wins in four years. There's certainly reason to suggest Keane's theory is somewhat archaic.

Nevertheless, the point remains, and you've got to wonder whether progression through the knockout stages will be enough for Liverpool at the end of the season and how much will that FA Cup exit hurt in May?

Some Liverpool fans are certainly beginning to wonder where the end product is and especially from a manager who started his spell with two finals that came so close to delivering cups.

When you've just taken Porto to the cleaners, though, there's every reason to be positive and that goes for Keane, too.

Do you think Jurgen Klopp needs to win trophies to be successful at Liverpool? Have your say in the comments section below.