If Chelsea were strong last season, then they are formidable this season, indeed, Chelsea's summer transfer window couldn't have gone any better.
They've plugged the weaknesses they had in the squad last season; they have two top-class, if not world class players in every position, plus they managed to do this whilst generating a profit.
Last season Petr Cech performed well, keeping the most clean sheets in the Premier League. However, general consensus dictated Cech is not quite up to the level he was before his head injury.
What do Chelsea do? They bring recall Thibaut Courtois who is arguably the best goalkeeper in the world right now (Manuel Neuer would disagree) and at the age of 22, he could easily wear the blue of Chelsea for a decade.
Courtois has already started to show it was a wise decision to back him back, but in the unlikely case his form drops, Cech is still a world class goalkeeper.
Another Atletico Madrid signing was Filipe Luis. Whilst left back wasn't a problematic issue last season due to Cesar Azpilicueta filling in admirably, he is not a left sided player. Filipe Luis adds balance to the Chelsea left wing and more to the point, he is arguably the best left back in world football.
Another La Liga signing was former Arsenal star, Cesc Fabregas. He adds guile and versatility to a team that lacked creative at many times last season.
Completing the rummage from Atletico Madrid is Diego Costa. Last season Chelsea lacked a player who could put games beyond their opponents and it hurt them on several occasions, forcing Chelsea to settle for 3rd in the Premier League and the semi-finals of the Champions League.
In Diego Costa they have one of the best strikers in the world - a massive upgrade on the past-it Samuel Eto'o and Fernando Torres, as well as the not-quite-good-enough Demba Ba. With Loic Remy an established Premier League star and Chelsea legend Didier Drogba returning, Chelsea's strikeforce has transformed from one of the worst in the top 10 to one of the best in Europe.
Add in selling David Luiz for a gargantuan £50 million, as well as Romelu Lukaku for £28 million, Chelsea have recouped on their spending and look set to comply with Financial Fair Play regulations.