By Mike McDaniel The NBA legend is interested in purchasing an ownership stake in the Raiders. View the original article to see embedded media. NBA legend Magic Johnson is interested in buying a stake of the Raiders, according to a report from Semafor. The ownership stake that Johnson is pursuing would reportedly set a record valuation for the sports franchise. Johnson is leading a group that’s seeking a minority stake in the Raiders. For context, owner Mark Davis received an offer for a minority stake in the team that placed the enterprise value of the full Las Vegas franchise at $6.5 billion…