As a result of the Ice Tigers' lack of interest in re-signing Prust, coupled with his disinterest in playing overseas, once again as a free agent, Prust opted to return for another attempt at an NHL comeback in signing a professional try-out contract to attend the Los Angeles Kings training camp on August 4, 2017. After attending Kings camp for 10 days, Prust along with Shane Harper were the first to be released from their PTO with Los Angeles on September 25, 2017.