NFL owners are meeting Tuesday in Minnesota, in part to vote on the purchase of the Denver Broncos by Rob Walton and family.

The sale is expected to be approved. At least 24 owners will need to approve the transaction to make it official.

Rob Walton, the son of Wal-Mart founder Sam Walton, has a net worth in the range of $70 billion. He'll immediately become the richest owner in the NFL.