Arsenal boss Arsene Wenger is delighted with his defensive options.
Wenger is feeling positive about his central defensive players.
Asked about Per Mertesacker's improvement after a shaky first campaign last term, he said: "All three centre-backs are doing well.
''And against Coventry in the cup game Johan Djourou and Ignasi Miquel were very, very good.
"We have centre-backs where I can adapt to the opponents we play against."