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Schalke have joined the race to sign Real Madrid midfielder Sami Khedira. Coach Roberto Di Matteo says he would love to bring the Germany international to the club.
Hamburg could end up paying an extra €150,000 for Julian Green, whom they loaned from Bayern Munich in the summer, as they have barely selected him.
Stoke manager Mark Hughes has admitted he is eager to keep Victor Moses at the club. The winger is on a season-long loan from Chelsea but the Potters are hopeful of agreeing another deal.
Manchester United remain keen on signing defender Marquinhos from PSG but will have to offer over €40m (£30m) as the French side are keen to keep hold of the Brazilian.
Arsenal will hand Arsene Wenger £50m to spend in the summer. The Frenchman's priority is a central midfielder but he is also keen on strengthening his defence and goalkeeper.
Barcelona sporting director Ariedo Braida has €50m to spend and is keen on a right-back and a central midfielder. Mattia De Sciglio and Lukasz Piszczek are options, while they are also keen on Marco Verratti.
Fred Rutten is set to step down as Feyenoord coach at the end of the season, with the club set to make an official announcement after Sunday's game against Utrecht.