Osimhen is expected to be one of the most sought-after forwards on the transfer market after an impressive spell in Turkey. The Super Eagles star has been heavily linked with several European giants, including Arsenal, Liverpool and Real Madrid.
However, Okpara feels a move to Old Trafford would be the best fit for the prolific striker.
Speaking to Soccernet, the former defender said Manchester United would provide the ideal platform for Osimhen to flourish and showcase his abilities in the Premier League.
"For me, I would prefer him to go to Manchester United," Okpara said.
"He has already played in Belgium, France and Italy. Now, what comes next? If he can't go to Spain, why not England?"
The former PSG defender believes Osimhen's physicality, movement and attacking qualities would make him a natural fit for the English giants.
"Manchester United is the best place for him because he will enjoy his football there," he added.
"The way he plays will fit perfectly into the Manchester United team. It would be the ideal platform for him to showcase his talents. It would be lovely for him to sign for Manchester United."
United are expected to be in the market for a proven goalscorer after another inconsistent season in front of goal, while Osimhen continues to attract interest from several top clubs across Europe.
The Nigerian striker has established himself as one of the continent's leading forwards in recent years following successful spells in Belgium, France, Italy and Turkey, and his future is expected to be one of the major transfer stories of the upcoming window.
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