After their defeat in the Eastern Conference Finals to the Miami Heat, the Boston Celtics will look to make major moves in the ongoing off-season. With NBA Trade Rumors linking many of their players with moves away, the Celtics could have a very different roster next season.NBA Trade Rumors: 5 players unlikely to return to the Boston Celtics for the 2020-21 season On that note, here are five players who are not likely to play for the Boston Celtics in the 2020-21 NBA season.#1 Gordon Hayward Boston Celtics v Miami Heat - Game ThreeDespite being in his prime age-wise, Gordon Hayward hasn't performed up to expectations after getting injured in his first game for the Celtics against the Cleveland Cavaliers in 2017.Hayward has a player option this offseason, and there is the possibility that he won't exercise it. The Boston Celtics will also be looking to get rid of Hayward's contract, and NBA trade rumors suggest that multiple franchises will be looking to add him on a negotiated salary.This would allow the Boston Celtics to work with more cap space and get a role player or a veteran to occupy Gordon Hayward's spot. Jaylen Brown revamped his game in countless ways this season, earning him the status of our 2019-20 Most Improved Player. https://t.co/7CxZdIBWZu— Boston Celtics (@celtics) October 22, 2020#2 Enes Kanter Boston Celtics v Miami Heat - Game ThreeTurkish center Enes Kanter had a mixed year for the Boston Celtics, as he played a key role for the team in the regular season but didn't feature a lot in the playoffs. Kanter has a player option in his contract for the upcoming season, and it is likely that the dominant big will choose a team that will offer him a better deal than the Boston Celtics. Already a part of NBA trade rumors, Kanter will have multiple suitors in the off-season, as the backup center is a position that a lot of teams will look to strengthen. He will also look for a team that will be willing to play him in the postseason as he looks to prolong his career in the NBA. Something worth noting as we get closer to the date when NBA teams can make trades: some with the Pacers still have interest in dealing for Boston’s Gordon Hayward, per sources: https://t.co/E2BJ0JungZ— Ian Begley (@IanBegley) October 22, 2020Also read: NBA Trade Rumors: 5 players who desperately need to change teams to revive their careers