Chelsea ace Willian is adamant their top four pursuit remains on track.

The race for the top-four spots will come increasingly into focus as the second half of the season progresses, with Chelsea the team currently fourth.

"I think we are doing a good job," says Willian of the season so far. "Of course there is some up and down, up and down, and we have always to try to improve ourselves, and that is what we look for.

"In the Premier League it [the race for the Champions League places] is always difficult until the end, we know that. We have to fight in every game because we know how it is to play in the Premier League. You play against small teams and sometimes you lose and it is difficult so you have to be ready."