Thomas Tuchel has reportedly asked Chelsea's board to fund a move for Real Madrid defender Eder Militao.
The Blues boss could be forced to reshape his defence in the summer transfer window, with three regulars on course to leave Stamford Bridge for free at the end of the season.
Antonio Rudiger, Andreas Christensen and Cesar Azpilicueta's contracts all expire in June, and although Tuchel is keen to keep the trio in west London, Chelsea are yet to tie any of them down to new deals.
