Kenyon added: 'I think everybody agrees with Felipe's assessment of Petr so naturally we are very happy he has committed his long-term future to us.
"He has been a key player in the club's success in the last four years. He has also shown himself throughout this time to be a top professional and is a great ambassador for the club."
Cech has played 166 games for Chelsea in all competitions and kept 90 clean sheets. His long-term contract follows on from the announcement of Wayne Bridge's new contract last week. Not joining Cech on the tour to China is unsettled striker Didier Drogba, who has officially been left behind for treatment on a new injury.
There has been fresh speculation linking him with a move to either Inter Milan or Barcelona but Scolari expects the Ivory Coast international to start the season at Stamford Bridge.
He said: "Didier's future? It is at Chelsea? He has a contract with us and I think he is happy at Chelsea."
Tal Ben Haim, Claudio Pizarro and Claude Makelele, who is set to join Paris St-Germain, have also been left out of the travelling squad.
Meanwhile, winger Florent Malouda is another first-team player who could be on the way out of Stamford Bridge after attracting the interest of Roma.
Malouda failed to impress following his £13.5m move from Lyon last summer and will be allowed to go if a club meets Chelsea's asking price.
German club Stuttgart have also revealed they are in negotiations with Chelsea over signing defender Khalid Boulahrouz, who spent last season on loan at Sevilla.
