The West Ham boss says he has developed a more flexible approach to tactics than his Everton counterpart, who he says is a believer in one style only.
The two sides meet at Upton Park tomorrow evening in the FA Cup Third Round replay after Everton drew with the Hammers at Goodison Park last Tuesday night.
“I’m a little bit more flexible than Roberto – he is a total believer in one style,” said Allardyce.
“You become flexible as time goes on.
“Flexibility teaches you that you have a philosophy in the way you want to play, but if that way of playing doesn’t suit the players you cannot keep that philosophy.”