And Isco - I don't think that we can call The Sun, Daily Mail and other tabloids as serious sources. For Real it would be stupid to sell him this January.
And Isco, there's a bit of a "toxic" atmosthere surrounding him right now which is not good for both the club and the dressing room. And according to rumours, he is the one that wants to leave the club so why not grant him the wish?
Well I hope Rabiot goes to the Catalans. I'm really very happy with where Barca are at the moment, and every season so far in the past few we've managed to gain a stronger and stronger hold over Real (except in Champions League meh), but each season we see more of our players aging. Suarez is still fit as always but he cannot be at his peak for long more. Same as Messi. Coutinho may last many more years but we do need more and more depth in midfield, we have never really asked for a better defence as long as we pack the midfield we are good.
And yes, always allow a player to leave when he wants to. I think the only example I can think of where player forced or convinced to stay and did well was De Gea for United.