why would trump pardon him - he donated to mostly democratic causes and openly hated trump (was going to pay him 5B to not run reportedly)
Trump does not care if you used to openly hate him. If you pledge allegiance to him, he is cool with it. Might need a small bribe, depending on the case.
It's not the strongest case for SBF so I don't know if it will happen, but I'd put it at more like 30-40% than the something like 1-5%.
Whether or not pardoning SBF would be a good deal for him is another question, though.
If this guy offered to pay him $5B at some point, maybe he will have a better offer later? It’s best to pardon him and see what he comes up with. As long as he’s motivated by “how can I pay more money to DJT,” it doesn’t matter who else he tried to bribe.