The 26-year old spent the latter part of pre-season on trial at the Reebok Stadium where he impressed during the friendly with Real Zaragoza earlier this month.
Kaku has agreed a three year contract with the Trotters and will not need a work permit due to the fact that he holds a Belgian passport having spent a large majority of his career in that country playing for the likes of Gent, Harelbeek and Molenbeek. He has played at full international level for Nigeria and was part of the Super Eagles team in the Sydney Olympics four years ago.
Wanderers had feared the deal might not go through due to red tape but that has now been resolved meaning that Kaku becomes Bolton's ninth new addition over the summer.
Commenting on his latest capture Wanderers manager Sam Allardyce said:
"Blessing is an excellent signing for us. He impressed me and my coaching staff on a recent trial and has all the attributes to be a success in the Premiership.
"He has an excellent passing game and likes to get on the offensive. He also has the necessary defensive instincts to make it in the English game and is not afraid to get stuck in and win challenges in the middle of the park."
BoltonMAD would like to welcome Blessing to the club