SANTA CLARA, Calif. -- I'm not sure where I stand on this new human stock deal. My weirdness about the phenomenon aside, I can totally buy San Francisco 49ers tight end Vernon Davis as one of the pioneers.ESPN.com reported Thursday that Fantex Brokerage Services, which announced its plans to sell shares of the future earnings of Texans running back Arian Foster, will announce it hopes to do the same with Davis. The company will have the rights to 10 percent of Davis' earnings, including his 49ers' contract, endorsements and post career interests, after paying him $4 million up front.