Alistair Overeem ’s return to kickboxing has been pushed to next year. Overeem has withdrawn from his title fight against reigning champion Rico Verhoeven at “GLORY: Collision 3” on Oct. 23 due to injury, promotion officials announced Wednesday morning. View this post on Instagram A post shared by GLORY Kickboxing (@glorykickboxing) Overeem took to Instagram to confirm the news and said that he’s been dealing with an injury for over a month. After trying to push through it, he ultimately decided it was best to withdraw. “I deeply regret that I have to pull out of the fight against Rico Verhoeven,” Overem wrote