Maybe it will be a little difficult for Man United to get rid of Maguire because he still has a strong desire to get his position back. There are rumors that Tottenham and West Ham have an interest in Maguire. But, the signing can only occur if the person concerned is willing to leave Man United. So I think Man United needs to take action to make Maguire want to give up his dream with Man United and be realistic.
Some of the teams you mentioned are interested in Harry Maguire there are also Newcastle who want to get him but on loan but in the news it says Manchester United just want to let go of the game because maybe Erik Ten Hag already knows that Harry Maguire has no place for this season unless he has to move if you want to get to play a lot because you are sure that Manchester United is no longer needed.
There are also other rumors that Manchester United are interested in Napoli defender Kim Min-jae and if Harry Maguire of course it will add funds to buy the defender, but about this the continuation is still unclear but I am sure Maguire will leave Manchester United.