The 23-year-old, who won four trophies at the recent Luton Town Supporters’ Trust presentation evening, has represented Scotland at Under-21 level 24 times and will now join up with Steve Clarke’s squad ahead of the play-off match against Ukraine on Wednesday.

Campbell made 39 appearances in all competitions during his debut campaign at Kenilworth Road and we would like to wish Allan all the best with the Tartan Army!