His departure will allow the Breakers to seek another import, with the team hopeful point guard Cedric Jackson will return to fill the second allowed import position if he fails in his quest to make the NBA.
Wilkinson, 29, leaves the Breakers with two championship rings in two seasons and a reputation as a fan favourite for both his production and frequent displays of enthusiasm on the court.
But he knew the writing was on the wall at the end of last season, and said in April he was happy to hand the reins to Pledger.
"Obviously I've got a lot of years playing in me and if they see Chief [Pledger] as their future then we just have to see how that is going to work. I am more than happy to watch Chief flourish because he deserves it.
"I would love to have a three-peat, but it's a matter of where the organisation is headed and where I fit into the whole scheme of things. With the Chief making huge strides, I would bank on him in the future.''
Wilkinson will join countryman Anthony Nelson on a largely Estonian roster. His new club does have one thing in common with the Breakers - they, too, are back-to-back winners of their domestic league.