The Borussia Dortmund team sheet that says everything about Liverpool's transformation under Jurgen Klopp

Now, here is a question whose answer might surprise you.

As Liverpool prepares to meet again with Borussia Dortmund, how many teams that started the last meeting between the clubs are still in Anfield?

It was of course the 4: 3 victory in the return match of the quarter-finals of the Europa League on April 14, 2016, an evening that undoubtedly kicked off the season. Jurgen Klopp era.

Less obvious, though, is that as many as seven of those who started with the Reds that night could play a bigger role in this next campaign.

However, a closer inspection of these names shows that Liverpool has been gradually modernized and evolved over the past years.

Within the team, players were invited to further develop the lineup of the starting team, an improvement over what was previously, with the replaced individuals becoming valuable alternatives and indispensable.

Indeed, only one of these seven starters started the victory in the final of the Champions League against Tottenham Hotspur in Madrid last month. Five were on the bench.

Back on that famous night of Anfield, Simon Mignolet was in goal, now an experienced Alison Becker badistant.

In the back right, Nathaniel Clyne was usurped by Trent Alexander-Arnold. On the opposite side, the late Alberto Moreno of Andy Robertson.

This is a similar story to the central back, with Mamadou Sakho sold and Dejan Lovren, scorer of the dramatic winner, now behind Virgil van Dijk, Joel Matip and Joe Gomez in the hierarchy.

In the middle of the field, Emre Can has been for a long time Juventus and Adam Hendina and James Milner have both been surpbaded by Jordan Henderson – injured in the game three years ago – Gini Wijnaldum, Fabinho and Naby Keita.

In attack, only Roberto Firmino of the famous front of today was at the club, although he was joined by Divock Origi. Philippe Coutinho, the other party leaving that night, is now somewhere else.

Most departures took place on the bench. Danny Ward, Brad Smith, Martin Skrtel, Lucas Leiva, Joe Allen and Daniel Sturridge are gone, while Sheyi Ojo is now on loan at Rangers.

For Origi, Friday's friendly will have some intensity, a reminder of the hijacking he followed to find himself in a similar position.

At the time, Origi had jumped over Sturridge in a hierarchical order, scoring goals at both legs against Dortmund and in an impressive form before seriously injuring his ankle against Everton.

His subsequent exploits are well documented, culminating in his outstanding contribution to the final stages of last season's Champions League win and the signing of a new contract.

The Origi Revival was the ultimate example of how Klopp stays true to those who, according to him, can always do a job.

The reminder of the last training against Dortmund is another proof.