Luiz Felipe Scolari believes zonal marking will kick-start Chelsea's season.
Scolari, under fire after a series of dreadful results, held his hands up this week that he was responsible for Chelsea's poor form and would try out the system of marking space rather than opponents at set-pieces from now on.
"When I arrived we marked zonally but then we changed to a man-to-man system," saidScolari. "Now with the new system if things go wrong it will be my faultnot the players' because it is my system.
"In the last four games, we were wrong."
But the system Scolari plans to use has been found lacking many times in the English game, particularly by Rafa Benitez's Liverpool and during Sven Goran Eriksson's time as England boss, and some within the club believe their manager needs extra help in under-standing domestic football.
One insider said: "Ever since he came in, Big Phil has shunned help from coaches who have worked long-term in England.
"Steve Clarke had no real part in training the team between Scolari arriving and his departure in September.
"And reserves manager Brendan Rogers moved on in November to manage Watford, because there were no first team coaching opportunities for him at Chelsea.
"Now Scolari has Ray Wilkins at his side on the bench, but even he has little to do with training the team. He may need an English coach to help him out."
Instead, and in contrast to Chelsea's last three managers, Scolari carries out most of the training himself alongside assistant coach and fellow Brazilian Flavio Teixeira.
Some at the club are worried that communication between the South Americans and many of their players isn't as good as it could be.