Celtic winger Mikey Johnston has exceeded expectations since joining West Bromwich Albion on loan during the winter transfer window. Despite being on the fringes at Parkhead, the Republic of Ireland international has hit a rich vein of form at the Hawthorns, registering seven goals and a solitary assist in 15 appearances [Transfermarkt]. Last week, the 24-year-old’s temporary agreement time south of the border continued to go from strength to strength in the West Midlands as he picked up the Sky Bet Championship Player of the Month award for March. Naturally, there have been questions from som…