Trent Alexander-Arnold's emergence at Liverpool has been an enthralling tale of fulfilled promise.The flying full-back is valued at £99m by Transfermarkt at the age of 21, making him the most highly valued right-back on the planet according to the popular football website.Jurgen Klopp's trust has truly paid off. Last season Alexander-Arnold recorded 12 assists in the Premier League, and his form has continued into the 2019/20 campaign.

Who said it: Klopp or Thanos?

World Class score: 95% | Expert score: 80% | Veteran score: 65% | Intermediate score: 45% | Amateur score: 30% | Try Again: 5%

Before the global pandemic placed football on hold, the England international had already matched his previous return of 12 assists, firmly establishing himself among the world elite in the process.

But just how good is he?

Well, according to Gary Lineker he is the world's best in his position.

In response to a tweet posted by SPORF, which suggested Real Madrid star Dani Carvajal as the best right-back on the planet, Lineker quickly name-checked Alexander-Arnold.

It's a big claim to make about a player of the Liverpudlian's age, but there is no doubting the legitimacy of Lineker's verdict.

There is undoubtedly still plenty of scope for improvement to be made in regard to Alexander-Arnold's defensive repertoire.

He is guilty of making some fundamental errors and lacking concentration at times, but the positives significantly outweigh the negatives at this stage.

Right now, there is simply no better right-back on the planet, and he's only going to get better in the coming years.