Chelsea are doing great in the transfer market, they have brought in Raheem Sterling which comes as a upgrade to their attack with his pace and dribbling skills. Priotizing building their defense now is a solid move. Reportedly, a deal for Koulibaly is already agreed which is a smart move for Chelsea to replace Rudiger and a few more additions to their defense and a good striker and they are good to go.
Chelsea is focusing on their defence and will likely spend more than €100m for that without including Sterling expenses. There is rumours about Koulibaly, Koundé, Aké and Kimpembe. Such spending should improve a lot the team so they can compete with City, Liverpool, Arsenal and Spurs next season since all these teams are working hard to build a solid squad!
Ake and Koulibaly are officially at Stamford Bridge now and it looks like the rumors about Kimpembe and Kounde will end with these two defenders.
Kounde is still worth bringing but with the high price tag and with Ake and Koulibaly I think Chelsea should be content with defense and focus more on center forwards now.