David Luiz is in London to have a medical ahead of his return to Chelsea from Paris Saint-Germain.
The Brazilian defender found time to have his picture taken with several fans while at St Pancras station in London, after arriving from Paris.
The two clubs have agreed a fee for the player, who left Stamford Bridge for the Ligue 1 side in June 2014 for £50m.
New Chelsea boss Antonio Conte has made it clear a centre-back was top of his priority list with moves for Alessio Romagnoli at AC Milan and Kalidou Koulibaly from Napoli falling through so far.
Sky in Italy reported last week that Chelsea's £30m bid for Romagnoli was rejected, and that there was a "90 per cent" chance of Koulibaly not moving to Conte's team.
Chelsea first purchased Luiz in January 2011 from Benfica for £21m.
In his three-year stay in west London, Luiz made 143 appearances for Chelsea in all competitions, scoring 12 goals.
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Video courtesy of Sun Dream Team