If the tax breaks are true, then this could easily persuade any sane person.
Added to that, what's the glory of joining Juventus who aren't even in the EL?
There's no real attachment to Juve for Aguero to prefer us to any other big club. At this stage I believe anything could sway him away from our grasp.
And if the last few years of Juve transfers have taught us anything, it's never have too much hope in signing a top player.