Few players have ever gone from being the biggest problem at one club to the most effective solution at another in such a short space of time.
Pierre Emerick Aubameyang’s metamorphosis from outcast at Arsenal to undisputed first-choice Barcelona centre-forward has helped transform the club’s season and his own standing among Europe’s top strikers.
Aubameyang scored the first and last goals in Barcelona’s 4-0 win over Real Madrid at the Santiago Bernabeu on Sunday night.
He could easily have scored a hat-trick; as it is his tally is now eight in 11 games for his new club.