You'll never see him in the UFC.
He's been training MMA for a few years now but hasn't developed as a fighter. As soon as he gets hit in the face he goes berzerk - his wins only come from TKO or dodgy decisions. I was a huge fan of him in Strongman days and he's a national hero in Poland but as a fighter - he's nothing more than an overmuscled hulk with little ability.
A freakshow fight in Bellator is always a possibility - but I think they'll have to beat KSW pay package for him to consider it.
At his age, why go overseas when you can stay at home, beat cans and take home a huge paycheck? The only two big draws KSW currently have are Pudzian and Khalidov - so it will take something BIG for either of them to leave easy fights that pay well.