Susannah Fuller, Nico Cantor, Charlie Davies & Darian Jenkins take a look at some star players from the English Premier League, Italian Serie A & La Liga and discuss whether their transfer price tag should be higher or lower than their current contract. Alexander Isak is all but sure to leave Newcastle United for an exorbitant fee, Aston Villa's Jhon Durán doesn't start but could he be poised to receive some high-level offers? Athletic Club's Nico Williams is young but has a bright future ahead of him. Finally, AC Milan's Rafa Leão has some of the highest potential of any player on this list, but is he worth the price?