Willian was pictured on Instagram at the Nusr-Et steakhouse in Dubai with celebrity owner Nusret Gokce, more commonly known as "Salt Bae".
Arsenal said Mesut Ozil and Sead Kolasinac would not play in Sunday's opening English Premier League fixture at Newcastle due to "further security incidents".
Sead Kolasinac and Mesut Ozil were driving along Golders Green district of London on Thursday evening.
Kick-off in the Group H opener at the Emirates Stadium was put back until 9:05pm local time (2005 GMT) in the interests of "crowd safety" after problems caused by thousands of ticketless Cologne supporters arriving at the ground
