Brazilian defender Alex believes caretaker coach Guus Hiddink will stick with the playing system which failed to work under Luiz Felipe Scolari.
The Dutch coach was due to meet Chelsea's players at the club's Cobham training ground when they returned from international duty on Thursday.
"I think he would play a similar system here to what we have seen, and when I was at PSV we played a 4-3-3 system - we had some very exciting times there," he said.
The centre-half is the only player to have previously worked under Hiddink, who will combineÂ the new club role with his main job as coach of Russia's national side.
He added: "He is a good coach and a fantastic man.
"When I played in Brazil with Santos I remember he came all the way to watch my games and speak with me, he is a very good man.
"In my three years in Holland, two of them were with Guus Hiddink and we won the title both times and the double once, as well as reaching the semi-finals of the Champions League in my first year."
Hiddink is likely to meet the English media for the first time at Chelsea's pre-match conference ahead of next week's Barclays Premier League game against Aston Villa.
Meanwhile, top managerial target Carlo Ancelotti has told the Blues he will not leave AC Milan to coach them next season.
However, the AC Milan coach, who is under contract until June 2010, told www.calciomercato.com: "In the summer I met Abramovich but I didn't want to leave AC Milan. The same thing happens now, I am not thinking about leaving."
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