Former player and assistant coach Ray Wilkins has labelled Chelsea's decision to sell Nemanja Matic to Manchester United as the 'worst' he has ever seen the club make.
The Serbian reunited with former Blues boss Jose Mourinho at Old Trafford in a surprise summer transfer worth £40million.
And Wilkins, who has enjoyed two stints as an assistant at Stamford Bridge, says he still cannot understand why the Premier League champions allowed one of their biggest assets to join a main title rival.
‘It’s the worst I’ve ever seen, if I can say,’ Wilkins said on Sky Sports.