Summer is here and while there is a World Cup on the horizon, there is still some serious business to be carried out at football clubs across the globe.
Manchester United have already made the biggest signing of the postseason thus far with the announcement Louis van Gaal will take over the reins as the club's new manager next year, but we can expect more big news as the weeks roll on.
Make no mistake, we've entered that part of the year where tradition dictates the back pages will be full of gossip and done deals.
Backed by the billions of Roman Abramovich, Chelsea will play a big part in it all.
Indeed, the Blues are reportedly interested in a deal for Bayern Munich striker Mario Mandzukic, per The Guardian, while the Daily Mail reports the transfer of Diego Costa from Atletico Madrid is imminent.
They're the types of stars who will excite fans, but as we look back at Chelsea's business from previous summers, how effective has the club been since their Russian owner arrived in 2003?
Bleacher Report highlights the best summer signings for each season Abramovich has called Stamford Bridge home.