Inter Miami is the preferred destination for Brazil international midfielder Casemiro and the MLS club is closing in on a deal with the Manchester United veteran, sources briefed on the situation tell The Athletic.Casemiro has announced he is departing Manchester United this summer when his contract expires. He wants to play for Inter Miami and ultimately a deal is expected to be reached, sources add.That Miami and Casemiro are even discussing a deal, however, runs afoul of MLS rules.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.Typically, these sorts of discovery right disputes are settled by one team compensating the other in a trade for the discovery rights. Two summers ago, a similar situation unfolded with Marco Reus. He ultimately signed for the Galaxy, but Charlotte FC had his rights and was trying to sign him, even offering more money than the Galaxy were. Reus still chose the Galaxy, who paid Charlotte $400,000 in General Allocation Money for those rights.