Holland Under-21 defender Virgil Van Dijk has arrived in Glasgow for talks with Celtic.
Rafael Benitez is expected to complete his first signing as Napoli manager later this week.
Udinese striker Matej Vydra is wanted by German side Werder Bremen on a loan deal, according to his agent.
Arsenal's Gervinho is flattered to be linked with Marseille as his future continues to be the subject of speculation
Hamburg are keen to bring in Paraguay international Roque Santa Cruz as a replacement for Son Heung-min.
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"Jose Mourinho is not a stupid man; he knows how important the likes of Luiz and Mata are to the future..."