Adams retired.
Vieira sold.
Henry asked for a transfer, and sold.
Toure asked for a transfer, and sold.
Gallas stripped of the captain’s armband and left without signing a new contract.
Cesc asked for a transfer.
Wenger inherited Adams. Tony Adams (with David O'Leary) is the stand out example of what a modern era Arsenal captain should be. You also have to give Tony total respect for the painfully honest admissions about his private life. My favourite Arsenal memory is Tony scoring against Everton at Highbury in 1998.
Since then four out of five captains have walked away. Not exactly a vote of confidence, by the club’s leading players, in the manager.