The Brooklyn Nets reportedly have concern over trading all their assets for Giannis Antetokounmpo this summer due to fear of his demands. Giannis has used his star power to get his brothers Thanasis Antetokounmpo and Alex Antetokounmpo roster spots with the Milwaukee Bucks. Both players barely get playing time and are questioned for not being worthy of NBA roster spots in any other context.NBA insider Brandon “Scoop B” Robinson reported that Bro…