The Nigerian striker finished his loan with Serie A side Chievo in style and is now likely to turn his attention to securing a move back to Upton Park.
Back in the 2010-11 season the 27-year-old striker arrived at Upton Park on loan from Inter Milan with a simple mission: score goals.
Developing an effective partnership alongside future Newcastle United and Chelsea hot shot Demba Ba, the forward managed a solid nine goals and countless assists in 23 games for the Irons.
Unfortunately, those efforts were not enough to keen the Hammers in the top-flight and, following relegation to the Championship, Obinna departed for pastures new, securing a permanent move to Lokomotiv Moscow.
The forward has struggled to rediscover his West Ham form since the move though and in recent times has made no secret of his desire to return to Upton Park.
It would appear that the feeling is very much mutual too, with the Hammers reported to have launched two bids to bring the player back to London.
Ultimately those bids failed though, with Obinna moving to Chievo on loan this term.
But after scoring in sensational style for the Verona club against Inter Milan on the final day of the season, West Ham have been offered a timely reminder of what the forward can bring.
And with manager Sam Allardyce under pressure to secure the kind of signings that will help the Hammers avoid even the mildest flirtation with the drop, Obinna could well top the Upton Park shopping list.
West Ham may have to move quickly for the player though, with the Nigerian keen to earn a permanent move away and in the Super Eagles squad for the World Cup.
Impress at that tournament and the Irons could be priced out of a move, meaning time is most definitely of the essence for Big Sam.