It would not be impossible to get the Bucks star on the Celtics roster. The question is more about whether it would make sense.

The Celtics are pretty restricted in how they can acquire Giannis Antetokounmpo because they’re above the second luxury tax apron. NBA rules prohibit them from aggregating salaries in a trade for a player with a larger salary. They also prevent the Celtics from taking in more salary than the salary that they’re giving out in any trade.