He won't be disrespecting any club if he would just say the most basic thing every player does. You know the usual, it's an honour for me when a club like (insert club) are thinking about me. But i am currently a (insert club) player.
The big worry is, there were reports that Pogba wanted Madrid, but Riola wanted him to come to United. This i agree sounds a bit far fetched as it is Pogba's career and he would do what he feels right and would not go to United so that Riola can get his 20 million or whatever ridiculous amount we are supposed to pay him.
But Madrid do not want to pay what Juvetus might be asking for, nor pay Pogba the salary he is asking for, nor pay Riola his fees. So i fear that if this deal happens, it might be because, Pogba will think, this move is a win win as he gets his move, gets his money, riola gets his money, media and fans will be all giddy, all kind of home coming stories will be written then when the time is right, Madrid come in and take him when he is at his peak years.
I agree the above para is pessimistic but knowing how players behave today is indication enough that Pogba is coming here as a stop gap rather than really wanting to be here. Again this my theory and coupled with the fact that we would be paying a world record transfer for a midfielder who is not a finished product "world class" we should stay away rather than helping him polish his skills and sending him away in 3-4 years. If he comes then i hope he helps United wwin a lot of silver ware and hopefully a champions league before he leaves.