FootballGravity Special Report
A continuing series about how football teams are rebuilt across transfer windows and generations.
A transfer changes more than a name
A squad is a set of relationships: minutes, roles, contracts, age, leadership and memory. When one player leaves, a club may need to replace several things at once.
How Teams Change follows clubs across seasons rather than judging a single transfer window. It combines player movement and match data with tactics, financial room, academy development and the people who carry standards from one team to the next.
Club studies

Club Study 1 — FC Barcelona
Barcelona, In Transition
The €222m Question: When Barcelona Lost Its Timetable
Neymar’s release clause brought a historic sum, but replacing a relationship required more than replacing a player.

Club Study 2 — Manchester City
Manchester City, Rewritten
The Treble was extraordinary, but it was not Guardiola’s only complete City. Five successful versions reveal a habit of reinvention.

Club Study 3 — AC Milan
Milan, Between Eras
When Greatness Still Had a Successor
For decades, Milan renewed great teams by letting each generation learn beside the previous one. The summer of 2012 interrupted more than a starting XI.

Club Study 4 — Arsenal
Arsenal and the Work of Continuity
Arsenal and the Work of Continuity
Arteta’s olive tree opens a story of managerial trust, resources and renewal, from Wenger’s stadium years to the work of rebuilding Arsenal.
This index will be updated as each club study develops and new teams are added.