The Costa Rica international, who is expected to line-up against England in the group stage of the World Cup, is currently on a season-long loan at Olympiacos from Arsenal after failing to secure a work permit in England.
I saw a little bit of him and you know, he’s a big talent and he showed that against Man United with that goal he scored
Campbell rose to prominence after scoring in the Greek side’s 2-0 victory over Manchester United in the first leg of their Champions League last-16 tie.
Olympiacos went out after United were 3-0 winners in the return leg, but Campbell earned many admirers following his performances in the European clash.
And Oxlade-Chamberlain was impressed with the 21-year-old during their brief time training together before his loan spells at Lorient, Real Betis and Olympiacos.
“When he first came to Arsenal he trained with us for a week or two and then went off on loan,” Oxlade-Chamberlain, who could face Campbell at the World Cup this summer, told RWD.
“I saw a little bit of him and you know, he’s a big talent and he showed that against Manchester United with that goal he scored.
“I do know a little bit about him. There’s no doubt he’s got talent like a lot of players for Costa Rica have and everyone else in our group.”
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