Unai Emery has admitted that Laurent Koscielny could "possibly" leave Arsenal this summer, in a move that would increase his need for a new leader within the squad ahead of the 2019-20 season.
Koscielny caused a storm last week when he refused to travel with the Gunners squad for their pre-season tour of the United States, which forced the club to launch disciplinary proceedings.
The 33-year-old's existing contract at the Emirates Stadium expires next summer, with Arsenal now reportedly content to let the deal run down before allowing him to leave for nothing.