Scottish champions Celtic are reportedly closing in on their fourth signing of the January transfer window...

What's the word?

According to Sky Sports journalist Anthony Joseph, the Old Firm giants are believed to have struck a deal to sign Suwon Bluewings striker, Oh Hyeon-gyu, with a fee of around £2.5m having been agreed upon for the 21-year-old.

Writing on Twitter regarding that developing story, the transfer insider revealed: "Celtic have agreed a £2.5m deal with Suwon Bluewings to sign striker Hyeon-Gyu Oh. The South Korea international, 21, has verbally agreed personal terms and is expected to finalise the move this week."

That seemingly imminent move comes amid the uncertainty surrounding the future of fellow forward Giorgos Giakoumakis at Parkhead, with the Greece international having been mooted for a move to J-League side, Urawa Red Diamonds of late.

Postecoglou must be 'incredibly excited'

Even without the potentially impending exit of the current Hoops marksman, there had been reports back in November that the Glasgow side were seeking to bolster their attacking ranks even further, with manager Ange Postecoglou seemingly set to continue his bid to keep improving his title-winning squad.

The addition of the aforementioned Oh could well prove a particularly astute capture for the 57-year-old, with the 6 foot 1 starlet having blossomed in his native Korea in recent times.

The one-cap international has proven himself a clinical presence in front of goal in his embryonic senior career to date, having scored 14 goals in 53 games for his current side, while also netting nine goals and laying on six assists in 40 games while on loan at Gimcheon Sangmu.

The most recent K-League campaign saw the emerging asset net 11 times in 32 league games, having enjoyed a particularly impressive end to the season with eight goals in his last ten top-flight games.

That sparkling form has unsurprisingly caught the attention of those at Celtic Park, with it looking as if he is set to progress even further in the years to come.

Such is Cho's standout talent, journalist Jason Lee only recently stated that he is "incredibly excited" at the prospect of the Korean making the move to Scotland, with the same likely to be said of Postecoglou who will have the chance to help nurture and develop yet another impressive youngster.

With fellow forward, Kyogo Furuhashi currently delivering the goods with 20 goals in all competitions already this season, it will be a mouthwatering prospect to have even greater competition in the attacking ranks with the addition of the Suwon sensation.