Former Illinois offensive lineman Simon Cvijanovic unleashed a series of allegations against the football program and specifically head coach Tim Beckman Sunday, calling for the coach's resignation and detailing what he described as a "hostile and abusive environment."Among other accusations, Cvijanovic wrote that the program pushes injured athletes to compete, used an unlicensed trainer, and withheld medical information. A sampling from Cvijanovic's :We don't talk about how we're mistreated because we're then "not a team player" or "soft" but no one pays the bill when we're gone. Simon Satchel Paige Jersey Cvijanovic (@SimonCvijanovic) Toby Harkins worked for months as our head trainer and was not a licensed medical profe sional in the state of Illinois. He was fired. Simon Cvijanovic (@SimonCvijanovic) Teammate was attacked by in the fall of 2013 at practice and his interview w about it was covered Simon Cvijanovic (@SimonCvijanovic) I'm not the only horror story of abuse and misuse of power by Simon Cvijanovic (@SimonCvijanovic) Why don't my medical records match what happened in meetings with doctors? Simon Cvijanovic (@SimonCvijanovic) Cvijanovic made 29 career starts for Illinois, but didn't play the remainder of his senior season after an injury sustained against Ohio State on Nov. 1. He addre sed that injury in his social media rant, suggesting he was pre sured to play when he shouldn't have been on the field.Beckman i sued a statement but from the Chicago Tribune."Simon Cvijanovic was a valued member of the University of Illinois football team. He chose to leave the team during the 2014 regular season and withdrew from the university before the end of the semester," Beckman wrote. "Upon his return for the spring semester, we have continued to support him with medical care, an academic scholarship and academic advising. We cannot make any student accept our support."Illinois offensive lineman Teddy Karras tweeted in support of Beckman.Simon quit on his brothers when we needed him most. These coaches let him stay on scholarship to finish his degree. Teddy Karras (@_teddy_k) In a news conference called Monday afternoon to specifically addre s Cvijanovic's accusations, UI Athletics Director indicated Karras who backed Beckman. Thomas said he would investigate the claims made by Cvijanovic, but in 2013 specifically.*Follow Chase Goodbread on Twitter *. Gio Urshela Jersey