Chelsea sign David Luiz, Tottenham win chase for Moussa Sissoko and more

What you need to know:
On the final day of the transfer window, David Luiz made a surprise return to Chelsea from PSG, while Bournemouth captured Jack Wilshere on a season’s loan
A round-up of the main late moves:
David Luiz (PSG to Chelsea, £34m)
Jack Wilshere (Arsenal to Bournemouth, loan)
Moussa Sissoko (Newcastle to Tottenham, £30m)
Islam Slimani (Sporting Lisbon to Leicester, £30m)
Mario Balotelli (Liverpool to Nice, free)
Enner Valencia (West Ham to Everton, loan)
Hal Robson-Kanu (free agent to WBA)
Alvaro Arbeloa (Real Madrid to West Ham)
Allan Nyom (Watford to WBA)
Georges-Kévin Nkoudou (Marseille to Tottenham, £9.4m) (Agencies)