Arsenal defender Laurent Koscielny feels they're out of the title running ahead of their clash with Chelsea.
He acknowledged that it would take a collapse of immense proportions if Chelsea were to surrender their impressive lead at the top.
"It is true that Mourinho likes the psychological game but it works just for a time," said Koscielny.
"Because it is on the pitch where things happen. It has been complicated for the boss. I hope, just for once, he will win against Mourinho.
"But I think they will win the title because they did the job before, earlier in the season."