Arsenal are interested in Napoli defender Kalidou Koulibaly after Arsene Wenger made centre-back and striker his transfer priorities following the £30 million signing of Granit Xhaka from Borussia Monchengladbach.

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Koulibaly, who is a 24-year-old Senegal international, is also among Chelsea and Manchester United’s potential targets but Arsenal intend to strengthen at centre-back following mixed performances last season from Per Mertesacker and Gabriel. Mertesacker has only one more year remaining on his contract while Arsenal will be conscious that Laurent Koscielny, who is the clear first choice central defender, is now also into his 30s.