Celtic winger Mikey Johnston has officially made his move to West Bromwich Albion on loan until the end of the season. Johnston is a homegrown product at the Bhoys but has struggled to cement himself as a regular starter. He spent the 2022/23 season on loan in Portugal but returned last summer and has been involved with Brendan Rodgers’ squad after returning from a summer back injury. The winger made 12 appearances in total this term but it’s long been rumoured he would be granted permission to leave the club during this transfer window. Johnston has now shared that his switch to West Brom has…