He is tentatively scheduled to defend in December, he should be able to enter the tournament if he wants to/ROAD allows it.
ROAD's current roster has some of the following options:
Soo Chul Kim - set to challenge for the Bantamweight title soon, has fought at FW a few times lately
A Sol Kwon - mentioned above, LW champ
Min Jong Song - Flyweight champ, has fought most of his career at BW
Mu Gyeom Choi - FW champ, beat Marlon Sandro in his last fight
Winner of
Bruno Miranda vs
Seung Yeon Kim I think has a good chance of being entered
Shinji Sasaki - challenging for A Sol Kwon's LW belt in December
Hiroto Uesako - the guy that got injured on TUF Japan, just won his ROAD debut recently. Protege of Sexyama which they can surely use to hype him up.
Min Woo Kim - BW but he has fought at FW before, expected to fight Soo Chul Kim for the BW title soon
Won Sik Park - hasn't looked the same after his big neck injury but he's on a 2 fight win streak now and has some name recognition from the DREAM and Sengoku days
Munguntsooj Nandinerdene - could be used as filler if necessary, he always puts on an exciting fight and has big KO power
Ik Hwan Jang - just fought at FW, trains at ROAD CEO's gym
Tuerxun Jumabieke - lost his ROAD debut to Soo Chul Kim but he's still a UFC vet and the champ of WBK
Albert Cheng - TUF China vet, 2-0 in ROAD
George Roop - broke his leg earlier this year, questionable if he will be healthy
Yoon Jun Lee - just had to vacate the BW title due to a cerebral infarction he suffered recently. Doubtful that he is ready by the time the tournament begins
Kyung Pyo Kim - trains out of Team MMA Story which is run by ROAD's MW champ Jung Hwan Cha and is also the home of FW champ Mu Gyeom Choi
Heili Alateng - BW who has fought at FW before, 3-0 in ROAD and on a 6 fight win streak
Marlon Sandro - already fought Soo Chul Kim and Mu Gyeom Choi. Fighting in Pancrase in December but it doesn't seem to be an exclusive contract.
Hyun Soo Kim - FW, wrestler with an inspirational story
Nam Jin Jo - former Flyweight champ, trains out of Busan Team MAD
Kwang Hee Lee - former Spirit MC champ, challenged for the LW belt 2 fights ago. He always puts on a show
Guys that aren't necessarily on their roster but have fought for them before:
Yui Chul Nam - former LW champ, used to train under the CEO. No word on a MMA return
Young Seung Cho - beat current Interim King of Pancrase and UFC vet Issei Tamura early last year, no word since. I'm not sure if he's military or what.
Chang Hyun Kim - I need to watch the fight again but I had him beating Shinji Sasaki. Trains out of Busan Team MAD. Used to be a thing with Hamderlei, not sure if they still are.
Takasuke Kume - Challenged for the ROAD title 3 times (vs Yui Chul Nam x2 and A Sol Kwon), current LW King of Pancrase
Zhikang Zhao - BW with experience at FW, 1-0 in ROAD
Lipeng Zhang - TUF China winner, went 2-2 in the UFC, current Kunlun Fight champion. Kunlun Fight is in co-promotion with TOP FC now though so idk if we will see him back in ROAD.
Gennadiy Kovalev - fought in ROAD earlier this year
Alexey Polpudnikov - fought in ROAD earlier this year
Rae Yoon Ok - came up through ROAD's amateur league, hasn't fought for them in his pro career yet though. Trains out of Busan Team MAD.
I fully expect them to make a push for free agents, guys nearing the end of UFC contracts, and top fighters from other Asian promotions. It will be interesting to see what they can come up with for such a large scale tournament with such a large prize. It would be great if TOP and ROAD could come to terms and allow some TOP FC guys like Seung Woo Choi, Kwan Ho Kwak, Han Seul Kim, Takenori Sato, Sung Chan Hong or Young Bok Kil to enter but I won't hold my breath for it.