Toni Kroos – Germany
Kroos, who has provided two assists in five starts at the World Cup, has just 12 months left on his current contract at Bayern Munich.
Manchester United are long-term admirers of the 24-year-old, but he looks set to join Champions League winners Real Madrid for a fee in the region of £20m.
Kroos will win his 50th senior international cap when Germany meet hosts Brazil in the semi-finals on Tuesday.