As is the case with Christmas presents, it often pays dividends to get your shopping done early. Amid the furore of transfer deadline day, Chelsea’s Jose Mourinho and Roman Abramovich may as well have been sat giggling in front of the fireplace with the gifts they’d bought for the team earlier in the summer.

Diego Costa has, without doubt, taken the Premier League by storm – while Cesc Fabregas has returned with ease and simplicity to dominate the assist rankings.

In total, three strikers arrived, a world class midfielder, and reinforcements in defence – an impressive swag for the boys in blue, who find themselves sitting pretty at the top of the Premier League tree.

But all their signing proven successful? Standard Sport's Simon Johnson run the rule on all six of Chelsea's summer signings.

Scroll through our gallery to see how each signing has fared so far...