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The 25-year-old Oxlade-Chamberlain posted five goals and seven assists in his first season at Liverpool.
Oxlade-Chamberlain has 32 England caps and 283 senior appearances between Southampton, Arsenal, and Liverpool. He left the Gunners in part because of a desire to play a more central role in the midfield.
Oxlade-Chamberlain detailed his recovery late last year. There’s yet to be discussion of when he might be fit to return to match play, but Liverpool will be careful with its industrious playmaker.