Chelsea boss Mauricio Pochettino insists his team remain in transition.

Ahead of their clash with Sheffield United, Chelsea have lost three of their last four games.

Pochettino said: "'We have a lot of injury issues and it's like building a house and some of the stuff are not there but we need to keep believing.

"The roof? Not there yet. We have good people building the house, good architects. We have the best company, architects, very creative and good - already proven.

"But when you want to build something you need solid foundations which sometimes are affected because of the nature of the circumstances. You dig the hole and there is water, it is not because of the company. An unexpected situation which delays the possibility to move quicker than you expected. Unfortunately we received too many hits against us.

"If you want to buy a new house you go to the market and choose the best house. A new house, already finished, this one, bam.

"But if you want to build a house you know you need to take some risks. We are going to need more time."

On his job security, Pochettino added: "The communication [with the owners] is the same from the beginning of the season, when we were in pre-season to today. But no words in football. The most important thing is being here.

"If I am here it is because they trust. If not in the moment that they stop to trust, don't worry you will see not me here."