Thomas Frank is a newcomer to Champions League football and Tottenham and he is about to discover one of the most frustrating situations the club have allowed themselves to fall into.
Many of the Dane's predecessors have fallen into the black hole that is the north London club's lack of club-trained players and how that affects the squad they can select for European competition and each transfer window. Every head coach in recent years, stretching back to Mauricio Pochettino, has needed to make difficult decisions over which Tottenham players must be told they will not be registered for huge continental games.
Last season, Ange Postecoglou had to make similar decisions with new signing Antonin Kinsky unable to be registered for the Europa League and Timo Werner and Radu Dragusin removed from the final squad as well along with Sergio Reguilon.
It all comes down to Spurs allowing so many of their senior club-trained players to leave in recent years and now only having one remaining in goalkeeper Brandon Austin. Frank faces another year of this issue before some of the younger players at the club become old enough to fit into that category so do not need to be registered in the main group.
Our Spurs correspondents Alasdair Gold and Rob Guest discussed the perennial issue and exactly what it means, the UEFA rule behind it all and why it will affect this summer's transfer window and how the club can get around it with a clever signing or two in the latest episode of their podcast Gold & Guest Talk Tottenham.
You can listen to the show by heading right here or watch the latest episode on YouTube by going right here.