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#4 Stefan de Vrij
A Dutch international, de Vrij has been linked with Liverpool many times in recent years but a deal has never materialised.
He is a product of the famous Feyenoord Academy which has produced players like of Robin van Persie, Georginio Wijnaldum and Giovanni van Bronckhorst among others.
He made his senior debut in 2009 and developed a respected reputation in the Eredivisie following promising displays during his first full campaign. Overall, he played 135 league games for them, netting six goals too.
His impressive performances in the colours of Feyenoord caught the attention of scouts across Europe and he eventually signed for Serie A side Lazio in 2014. Over the past few seasons, he's been one of the team's most consistent and influential performers, establishing himself as one of the best centre-backs across Italy.
With his current contract set to expire this summer, a host of clubs are monitoring his situation and are prepared to approach him - Liverpool need to act fast if they want to partner van Dijk with his compatriot in future.
