1. Diego Costa, Atletico Madrid
Finally this is the transfer that appears to be as good as done, with Costa reportedly having completed his medical at Stamford Bridge ahead of a £32m switch.
After scoring 37 goals in all competitions for Atletico last campaign the 25-year-old is now considered to be among the finest strikers in the game currently.
Source: BBC Sport.
READ MORE: Chelsea transfer rumours.
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