The Gunners are one of a number of Europe's top clubs closely monitoring the 17-year-old forward.
And Arsenal were in attendance as Kokcu, on his first senior appearance, came off the bench to score and provide an assist in the win over Emmen.
The 17-year-old is regarded as one of the brightest emerging talents in European football - and is already training with the Feyenoord first team.
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