Williams was handed a 14-month suspended jail sentence in May and ordered to do community service following a high-speed car crash. Hull head coach Sergej Jakirovic addressed Williams' recent issues when offering him a trial, saying: "I like to help people because everyone deserves a second chance in life. I spoke with him very honestly, and I explained to him what I expect from him.
"We will be very careful, very, very slow. We have time, so we will try to help him. I think the quality is there because he was on a high level at Man United, so his quality is there. We need him to bring good fitness, and then we will make a decision."