jose mourinho says injuries to his strikers have made him take cautious approach to the last few games wrapping up the title , but the defensive side of his team has stayed remarkably settled all season .
the 0-0 draw at arsenal was the 20th time in 33 premier league games that the chelsea boss started with his favourite ` back seven ' of thibaut courtois in goal , with branislav ivanovic , gary cahill , john terry and cesar azpilicueta protected by nemanja matic .