"I was just thinking about it and I need to stay closer to home," the 6-foot-5 Lutcher, La., native said.
Scotty Fletcher, a mentor to Marshall, saw indecision in Marshall and gave counsel to the Jones County Junior College standout. "Trenton brought it to my attention that he was having second thoughts and wanted to stay closer to home. It's his decision but he wanted some guidance how to open it up and his intention is to stay closer to home."
Marshall told Scout.com that he communicated the news of the de-commitment to Oklahoma State a week ago. "I haven't had time to tell (any schools) but I told Oklahoma State."
Marshall told Scout.com he is interested in William Carey (Fletcher's current school), Mississippi, Jacksonville State, Kentucky, Alabama, LSU, Mississippi State, Texas A&M, Kansas and Oklahoma State.
Marshall said he hasn't given much thought to official visits. "I'm looking for something up-tempo and have freedom on offense."
Last season, Marshall was a first-team all-american who averaged 23 points.