Chelsea boss Jose Mourinho believes his squad lacks depth.
Mourinho says he doesn't have the "options" of Premier League rivals.
"We have a very short squad, we don't have a squad like other teams in the Premier League with options. Options, options. We rely a lot on this group of players which we have."
He told BT Sport: "Last year we did well, but not well enough to win silverware. The players that stay in the team from season to season give us the stability and the spine, the structure of what we want.
"With14 matches to go. We are speaking about 42 points, that's a lot of points. But we know that we have 7 points more than the second, ten to the third and 14 to the fourth. We depend upon ourselves, we don't have to be under pressure every weekend trying to know the results of Southampton or Man City or Man U or Liverpool. We simply don't care about it, we do our work and we try to win our matches. And in this moment every match we win, every point we get, we get a little bit closer, but it's still too far."