Arsene Wenger suggests Joel Campbell could turn out for Arsenal next season [GETTY]
Campbell is on a season-long loan spell at Olympiakos and impressed during the Greek side's 2-0 victory over United this week.
The 21-year-old hit a wondergoal to seal victory for the hosts, leaving many suggesting he could be set for a return to Arsenal.
And Wenger has hinted that he could be preparing to make Campbell a part of his squad next season.
"He was good, convincing going forward," said Wenger.
Arsene Wenger pre Stoke press conference
Wenger believes Campbell has toughened up during his loan spells [GETTY]
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"He looks like he has adapted to the physical side of the European game. We knew he had the talent, but sometimes he relied a bit too much on just that.
"He has been at three different clubs, Lorient, [Real] Betis and Olympiakos. He has learnt the toughness of the European leagues.
Wenger was coy on Campbell's Arsenal future, but refused to rule out the Costa Rican returning to the Emirates.
"I will decide that [his future] later, why not?
"We bought him to bring him here."
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