Diego Costa could reportedly seal a £57.2 million return to Atletico Madrid before current club Chelsea take on the Spanish outfit in the UEFA Champions League next Wednesday.
According to Spanish radio station COPE (via the Evening Standard's Simon Johnson), the forward "will be in Madrid by the weekend" after a deal was agreed for an initial £48.4 million and a potential £8.8 million in add-ons.
The transfer window is closed and Atletico are under a FIFA-imposed registration...