Dacre Montgomery is thought to be playing Jason (official character names have yet to be announced), who in the past has been the leader of the group. Below you can check out the official announcement from Power Ranger Instagram account.
The character of Jason has been described as: "the makings of someone or something great if he would just get out of his own way. Jason was a legend of this town—a freshman quarterback with the skills to take him all the way. People knew his name. Children wore his jersey. Until, one night Jason wrapped his car around a pole and busted out his knee. Everything Jason was going to become ended in an instant. And with it, he lost himself. When we meet him at the start of the film, he’s a kid in need of redemption. By the end, he’ll be leading this disparate group of teens to shed their individual baggage and find who they truly are."
The new Power Rangers movie has a January 13, 2017 release directed by Dean Israelite (Project Almanac) with Power Rangers creator, HaimSaban, producing the film.