Ohanu began his youth career with Enugu Rangers Academy. He joined the Enugu outfit in 2013. The following year, he was recruited by second division side, Gabros after an impressive tryout.
Ohanu scored eight goals in his debut season with the Nnewi club, helping them earn promotion to the elite division.
Shortly after their promotion to the NPFL, Gabros were acquired by Nnewi billionaire Ifeanyi Ubah and their name was changed to F.C. Ifeanyi Ubah.[2]
He was outstanding for Gabros in the 2014-15 season matchday seven 2–0 win over Enyimba in Nnewi on 3 May 2015.[3]
After a season with FC Ifeanyi Ubah, Ohanu moved to Kwara United, who were in the second division at the time.
The striker finished as the top scorer in the division with 21 goals and Kwara United secured promotion to the NPFL. He also won the Bet9ja Nigeria National League player of the 2016–17 season at the Gala held on 10 January 2018.[4]
on 21 April 21, 2018, Ohanu joined El-Kanemi Warriors on loan in the midseason of 2017-18 season, following two-and-a-half seasons with Kwara United.
He scored on his debut for El-Kanemi Warriors in the final match of the first round, on 29 April 2018, helping the northeast club secure a 2–0 home win over Nasarawa United. His 54th-minute effort put the icing on the cake, after Antonio De Souza had opened the scoring within eight minutes of the encounter.[5]
After seeing out his six-month Elkanemi contract, he signed a two-year deal with MFM FC. On 10 February 2019, Ohanu scored his first goal of the 2018-19 season for MFM in a 3–2 comeback win over Niger Tornadoes in a Group A matchday eight tie at the Agege Stadium.[6]
He ended up scoring two goals in eight appearances for MFM during the second half of the 2018-19 season.[7]
At the end of the 2018–19 season, Ohanu cut short his two-year MFM deal to join Akwa United on a one-year loan contract. He was unveiled alongside 14 new signings by the Promise Keepers ahead of the 2019-20 Nigeria Professional Football League season on 28 October 2019.[8]
