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Four Liverpool players are among the 100 most valuable in Europe – according to the CIES Football Observatory.

The Swiss-based research body has released their latest monthly report, detailing the transfer values of players in Europe’s ‘big five’ leagues – England, France, Germany, Italy and Spain.

And a quartet of Jurgen Klopp's Reds feature.

Philippe Coutinho is 27th on the list, with an estimated value of 52.3m Euros (£41m), while Emre Can (£31m) is 59th.

Roberto Firmino (£30m) ranks 65th while, perhaps surprisingly, Jordon Ibe comes in at No.95 with a value of £23.7m – ahead of Borussia Dortmund star Marco Reus.

CIES’s findings are based on a statistical model which takes into account transfer deals completed during the last six years, and uses key indicators such as a player’s age, position, contract, international status and performance to determine his estimated value.

They claim that, since their research began in 2013, the correlation between values estimated by their model and actual transfer fees paid by clubs has been close to 80%.

Their latest findings claim, remarkably, that no fewer than eight ‘big five’ players could command a transfer fee of more than 100m Euros this summer.

They are: Lionel Messi, Neymar, Cristiano Ronaldo, Antoine Griezmann, Harry Kane, Anthony Martial, Luis Suarez and Paulo Dybala.

Premier League stars Sergio Aguero, Eden Hazard, Alexis Sanchez, Dele Alli and former Reds winger Raheem Sterling are also listed in the top 20 most valuable players.

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Other notable players on the top 100 list include Southampton’s Sadio Mane, a known transfer target for Liverpool this summer. The Senegalese forward is 74th on the list, with an estimated value of £27.8m.

A number of other players linked with a move to Anfield feature, including Gonzalo Higuain, Alexandre Lacazette, Leroy Sane, Julian Brandt and Jonathan Tah.

Coutinho, of course, has been the subject of transfer speculation this week, with news that French champions Paris Saint-Germain were targeting the Brazilian. The suggestion is that the Ligue 1 side would be willing to pay up to £45m to secure the 23-year-old, although Liverpool will resist any bids for their player of the season this summer.

CIES' full top 100 list can be found below, while CIES’s full monthly report can be accessed here.

*All of the above valuations are in Euros