Caley Thistle assistant head coach Billy McKay. Picture: Ken MacphersonInverness Caledonian Thistle assistant head coach Billy McKay has confirmed his retirement from playing football. The club’s top goalscorer says he is hanging up his boots in a video on the club’s social media on Friday afternoon. However, he will remain at Inverness as assistant coach working alongside head coach Scott Kellacher. In a video interview on Inverness Caledonian Thistle social media, Mckay says he could possibly return if there is an injury crisis in the squad, but otherwise, does not envisage himself playing again.