I dont even want to go into these stupid discussions, but

Boba would be motivated mainly by money/bounty (possibly payed by Jabba once he seen Solo was delivered to him then killed with his own eyes. So he needed to hang around for his bounty on Solo).

But if he'd heard of someone throwing about a lightsabre and calling himself a Jedi Knight, maybe feelings would dig a little bit deeper than money, as all Jedi were supposed to be wiped out. Boba then had an alternitive agenda to his mission, if he knew the Jedi Knight was in the post, as so to speak.

NOW IM talking all nerdy aswell. Sheesh Kebabee!

Boba is supposed to be there....(reasons unknown). Leave him be.