Former England coach Graham Taylor believes the beginning of the end for Jose Mourinho at Chelsea came when Michael Ballack and Andriy Shevchenko were brought in, reportedly against the manager's wishes.
Taylor told BBC Radio Five Live : "Once you take away the authority the manager has in signing players, you're on a slippery slope.
"What I would say about Mourinho is his record is with underachieving players and when Shevchenko and Ballack came in, it disturbed the balance.
"They've never looked as fluid and that's because the manager probably did not himself believe that is the way they should be playing."