Liverpool's hopes of finishing second were severely dented as they were held to a goalless draw by Stoke City at Anfield on Saturday.
The Reds are said to be monitoring the Dutch international as Jurgen Klopp eye's reinforcements in January.
Napoli playmaker Lorenzo Insigne is being considered by Liverpool as a potential replacement for Philippe Coutinho amid heavy speculation surrounding the Brazilian's future.
The Reds are on the hunt for a replacement for Danny Ings, who has been ruled out for the season
The Liverpool boss has made the made highly-rated American forward a prime target following striker Danny Ings' long term injury.
David Moyes' attempts at bringing English striker Danny Ings on loan to the Stadium of Light have been rebuffed by Liverpool.
Liverpool kick-started their pre-season campaign with a win over Conference side Tranmere Rovers. Returning from his ACL injury, Danny Ings scored the decisive goal for the Reds in the second half.
Villarreal boss Marcelino Garcia Toral believes the atmosphere at Anfield will do little to intimidate his players stating that the electric atmosphere will instead serve as an inspiration for them to perform at the highest level.
Liverpool FC forward Danny Ings has been ruled out for the rest of the season after twisting his knee in the first training session under new manager Jurgen Klopp.
England qualified for the Euro 2016 with a 100% record, winning each of their games to top their group. With the draw set to take place in December for the big summer tournament in France, we look at the players that can force their way in Roy Hogdson's plan.