Nwaneri moved to OM on-loan from Arsenal in January, but has already experienced a change of coach after Beye replaced the sacked Roberto de Zerbi.
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Former Arsenal and OM star Pires told Le Provence: "It's not easy for him, but the English aren't afraid of anything, I'm not worried about him.
"He'll have Mason Greenwood's support. What's also good for him is that Habib speaks very good English.
"Young Ethan is technically gifted and very incisive. Over the final three months, Habib can contribute something to him."
Nwaneri is on a straight loan at OM to the end of the season.