Remember Giannis holds all the cards and will dictate where he will be traded. I believe he said his preferred destination would be to the Knicks or so the rumor stated. Still Giannis will be able to pick the team he wants to go to.
At best you are looking at mid to late first round draft picks and then expiring contracts in a Giannis trade. I wouldn’t expect anything more than that. He will be traded to a contender and not to someone who will have an early first round draft picks.
Something like this is what I would expect: