Alex admits Dad Mark Chamberlain is working closely with Christian.
He revealed: "He's doing the same now with my little brother Christian, who is 13 and down at Portsmouth.
"He's my dad's next little project!"
Despite his big-money summer switch from Saints to Arsenal, Oxlade-Chamberlain still turns to his dad regularly for advice.
He said: "My dad speaks a lot of sense and keeps me grounded.
"He'll watch me play and, if I've done well, he'll have a quiet word with me and say, 'Well done'. If I've had a not-so-good game, he'll let me know about it."