The 29-year-old made 15 Super League appearances for the Wildcats last season and helped them retain their top-flight status, but he is now a free agent.
He previously spent time playing rugby union with Premiership side Newcastle Falcons in 2014-15.
Lee Radford's Hull FC side finished eighth in Super League last season.
Former Leeds Rhinos and Wakefield Trinity Wildcats utility back Lee Smith is training with Hull FC.