Chelsea boss Maurizio Sarri admits he wants to buy in January.

The Blues have now lost two of their last three Premier League matches after their midweek defeat at Wolves.

Sarri said, "We need to work and improve. We need to understand the style of playing.

"We need to change mentality - not because the old mentality was bad but it is not suitable with the new way of playing. Then after all this, maybe you need one player.

"But you cannot think you can buy 11 new players without problems. Then the problems will be the same. You have to create a new mentality and style of playing.

"We need to arrive at 95 per cent of our potential, then we can get the last five per cent with a new player."