It’s clear the Bucks want to keep Giannis. They probably signed his brother because they knew Giannis wasn’t pleased when they waived Lillard. So, to keep him happy, they brought Thanasis back, at least as a way to maintain their relationship. The Bucks’ management knows how to keep Giannis satisfied. They also know that if Giannis leaves, it’s over for them, the Bucks won’t be a title contender anymore.