Biyombo is two years younger and is making only slightly more than Thompson. Their per 48 minute stats are very similar, although Biyombo averages 0.5 more rebounds and 0.7 more blocks. I'd consider including Thompson & Biyombo in the deal.
As one who lives in Florida and usually attends 7-8 Magic games per year, I can attest that the franchise is stuck in a rut and in need of a kickstart. Florida fans are fickle and they desperately need a star player, like Kyrie, to connect with. That said, I believe the Magic would trade anyone from their roster, with the possible exception of Isaac. Aaron Gordon is a guy who intrigues me. They tried to make him a three-point shooting small forward and that's just not a good fit for him. He's an energy player, not unlike Draymond Green, who is best on the break and gobbling up rebounds.
I'd consider trading Kyrie & Thompson for Biyombo, Terrence Ross, Gordon, Elfrid Payton, & an unprotected 1st round pick. Our defense improves significantly with that deal. Payton is atheltic and a very good defender. He'd be a great third guard off the bench for a good team.