Galatasaray and Besiktas fans on police's radar when 5,800 supporters of Turkish clubs arrive to face Arsenal and Tottenham

Police vow they are ready for the arrival of thousands of Turkish supporters when Galatasaray and Besiktas arrive in London to face Arsenal and Tottenham respectively this week.

Last season’s derby between the Istanbul clubs was abandoned when hundreds of fans stormed the pitch with Galatasaray leading 2-1 thanks to two Didier Drogba goals. Police used teargas to disperse the rioters and Drogba and the rest of the players were forced to flee to safety.

Gala now face Arsenal in the Champions League at the Emirates Stadium on Wednesday, while Besiktas take on Spurs in the Europa League at White Hart Lane 24 hours later.

Besiktas fans unveil a banner labelling themselves 'soldiers' before Champions League game against Arsenal

Galatasaray fans light up during the Turkish Super League derby match and police say they are ready

Galatasaray face Arsenal in the Champions League on Wednesday, while Besiktas take on Spurs a day later

Turkish fans hold flares together the last time Chelsea faced Besiktas in the Champions League 

Galatasaray have sold 3,000 tickets and 2,800 are expected from Besiktas.

And a spokesman for the Metropolitan Police said: ‘We are aware