The Republic of Ireland international has been in and around the Celtic first team since making his debut for the club in a 4-1 win over St Johnstone back in May 2017. Since that time, Johnston has gone on and made just 92 appearances for Celtic scoring just 13 goals and creating twelve assists. [Transfermarkt] To put that into context, in just over two years at Celtic, Daizen Maeda has made 100 appearances and has scored 27 goals and created 15.So it’s clear that Johnston has really struggled to make his mark on the team. However, now on loan at West Brom, the 24-year-old is lighting up the English Championship and grabbing all the headlines after netting six goals in nine appearances. And that has led to interest being shown not only from The Baggies but other clubs in the English Championship. So that means Celtic, should they decide to sell Johnston, will be expecting a pretty penny for the academy graduate, right?