The 23-year-old was cleared of the charge at Caernarfon Crown Court today, while Sheffield United striker Ched Evans was given a five-year prison sentence after the jury found the 23-year-old guilty of having sex with a 19-year-old woman last summer without her consent.
A statement read: "Clayton McDonald has maintained his innocence from the start and is relieved at his verdict.
"However, he is very upset and disappointed regarding the verdict given to his lifelong friend, Ched Evans, whom he will continue to support in any way possible.
"Clayton would like to thank his family, friends, the staff and fans of Port Vale Football Club and his legal team for their continued support."
Meanwhile, Evans is considering whether to appeal the court ruling.