Bellator will have a new member on its lightweight roster for 2022.
Pieter Buist, a training partner of Bellator middleweight champion and fellow Dutch fighter Gegard Mousasi, announced Monday he has signed with the promotion and is anticipating a promotional debut in the new year.
“Alright everyone the is out of the bag & the rumors are Tru,” Buist posted on Instagram. “after 2 years of kicking ass in Asia( @onechampionship crew and old manager @richardeddycoutinho THQ for the journey) it’s time for a new chapter!! 
• @bellatormma , @bellator.europe is my new home/family and I’m hungry and on a mission, I have a new fire that’s bigger than ever & I will claim that lightweight mma world title within 2 years 
the competition is tuff but I don’t give a f#ck i believe in my self and will do everything within my power to achieve my goals 
!!! • Shout-out and THQ to my team: @combat_brothers Team @mousasi @neems01, @moments_mgmt And my sponsor’s
• And of course a shout-out to: @bellatormma , @bellator.europe @therealscottcoker thq for welcoming me with open arms !!! Now let’s do this !!!
• Stay tuned fight News coming very soon”
The 33-year-old Buist is coming off a pair of losses in his most recent two bouts for ONE Championship. In November, he dropped a decision to Ruslan Emilbek. More than a year prior to that, he lost a decision to Timofey Nastyukhin.
But before those setbacks, Buist had an eight-fight winning streak that included three straight ONE wins – including a split decision over former ONE champion Eduard Folayang.
No date or opponent for his Bellator debut has been announced, but Buist posted on Instagram he would have news “coming very soon.”
ONE Championship’s Pieter Buist announces new deal with Bellator