You're so annoyingly ignorant
"Random guy" if you don't know much about him fine but don't act like he is some nobody. He is a young Brazilian who plays for the biggest Brazilian team and now is getting a look in at the national level who is being scouted by a number of big European club.
Us signing him has ZERO effect on our pursuit of a top Defender. Clubs are able to scout, negotiate and sign more that one player at a time.