MLS is so silly because what do you mean you discovered Casemiro?
The LA Galaxy hold the priority right to negotiate with Casemiro, a mechanism called “discovery rights,” and were hoping to convince him to come to Los Angeles. Sources indicate the Galaxy and Casemiro or his representatives had numerous conversations, including multiple contract offers by the Galaxy. The discovery rules are meant to avoid these very scenarios in which multiple MLS clubs are negotiating against each other.