If your club could sign any current player from their direct rivals, for FREE, who would it be?

As a Real Madrid fan, in the past I would say Messi without even thinking. Nowadays it's not as easy, but I would probably be Joao Cancelo. He isn't the best defensively, but he can work wonders in attack, plus he plays in both fullback positions and occasionally in the midfield. Very good crosser, passer and sometimes long distance shooter. He could work well as a RB, as he is a very offensive fullback, balancing nicely with a very defensive fullback, Mendy. Carvajal is also defensively solid, so he could play as a LB, on that occasion, especially on games when Real Madrid really need offensive fullbacks.

I know technically Cancelo is a Manchester City player, so if he doesn't count, I'd say Pedri or Kounde.