There is an element of risk with any transfer, which is perhaps why trading between the top four is so rare and why Raheem Sterling’s imminent switch to Chelsea is so fascinating.
Manchester City are allowing a prolific goalscorer to go to a rival, a player who has made the most appearances of anybody in teams picked by Pep Guardiola. Under his tutelage, Sterling has found the net 120 times in all competitions.
And when City have been at their scintillating best over the last seven years, it has often coincided with the forward scaling his personal peak, too.