Former UFC bantamweight champion Petr Yan has now dropped two fights to current 135-pound titleholder Aljamain Sterling and regardless of whether or not you agree with how those two bouts played out, “No Mercy” is going to have to rack up a few more wins before the promotion grants him a third crack at “Funk Master.” That’s just fine with Marlon Vera. Probably because “Chito” will earn his first-ever title shot with a victory over “No Mercy,” who is widely considered the second best fighter at 135 pounds. Vera (19-7-1) is the winner of three straight, including last April’s unanimous…