Giannis Antetokounmpo's future has been the subject of rumors since the offseason. Recent developments have ignited the belief that the two-time NBA MVP's time with the Milwaukee Bucks might soon come to an end.According to ESPN's Shams Charania on Wednesday, Antetokounmpo and his agent, Alex Saratsis, have engaged in conversations with the Bucks front office about the superstar's future.On Thursday's episode of the "Rich Eisen Show," NBA insider Brian Windhorst reported the latest on Antetokounmpo, who has an average annual salary of $58 million, per Spotrac. Per Windhorst, superstars asking for trades has been the norm in the NBA, but Antetokounmpo's situation in Milwaukee is different."Giannis has not gone up and said, 'I want to be traded,'" Windhorst said. "Giannis has just expressed frustration and his agent has had to be the sort of the guy behind the scenes that has talked about stuff."Windhorst added that answering the question of whether the Bucks star has asked for a trade is complicated."It doesn't have a simple answer because he's elected to sort of go through the process without having a firm decision," Windhorst added. "He's just not thrilled of where they are, but he doesn't know whether he wants to go forward. ... The Bucks know that they're in trouble with Giannis. They know that they're pushing it."So the question really is now, will Giannis cross the Rubicon in the line and say, 'Trade me'? I don't know the answer to that. But I do know, and Shams has reported on this for months, that it is something that Giannis is very much considering. I know it's frustrating to hear that gray area, but that's just where it is."Charania reported over the summer that Giannis Antetokounmpo "explored external options," and was "interested" in joining the New York Knicks. Several reports said the Bucks and the Knicks engaged in trade conversations, but it did not materialize.Brian Windhorst points out the key date to monitor in Giannis Antetokounmpo's situationIn Thursday's episode of "Get Up," NBA insider Brian Windhorst discussed the expected timeline for when the significant updates on Giannis Antetokounmpo's future might come out."I think that everybody here wants some clarity within the next couple of weeks and whether Giannis is going to be committed to the Bucks for the season or he would like to be traded," Windhorst said (Timestamp: 4:35). "And the key date to circle is December 15th. That is when all the players, for the most part, who were signed last summer can be traded."Every year, December 15th is the unofficial start of NBA trade season, so between now and then, pending this injury situation, I think the Bucks and Giannis would hope to have clarity on whether he’s remaining invested or not."Coming into Thursday, the Bucks are 10-13, and the team announced that Giannis Antetokounmpo will be sidelined between two and four weeks due to a calf strain.All eyes are on whether Milwaukee can rack up wins while Giannis Antetokounmpo is out. The nine-time NBA All-Star is putting up MVP-caliber numbers in his 13th season with the Bucks, averaging 28.9 points, 10.1 rebounds and 6.1 assists on 63.9% shooting.