Arsenal are hardly a team of ageing stars, but they will face the youngest scorer in the history of Fifa competitions in AC Milan's Brazilian sensation Alexandre Pato.
Now 18 years old - he was only 17 when he broke Pele's record - Pato only officially became a Milan player on 3 January this year. He scored on his competitive debut against Napoli 10 days later.
South American football reporter Tim Vickery told BBC Sport: "Pato is extraordinarily talented and has more than lived up to the hype around him with a sensational start to his spell at Milan.
"A wonderfully fluent mover, cool finisher and dangerous in the air."
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