Olivier Giroud sealed an £18million move from Arsenal to Chelsea as a host of top clubs made last-minute moves in the January window.
The Frenchman followed in the footsteps of former team-mate Alexis Sanchez in moving from one top-six side to another. But how often does this happen? How frequently does a top side help out another by selling them one of their best players? Does it always work out for the buyers?
Sportsmail takes a look at some of the transfers between the Premier League's top clubs over the last decade and how they worked out.