SAM Allardyce has resisted the temptation to be cruel on his Fulham flops but he is unlikely to be so kind in the future.

The Wanderers boss is considering making "one or two changes in key areas" for Wednesday night's game at Southampton, but he admits he could have been much more savage after Saturday's 2-0 defeat at Craven Cottage.

"There were so many players played badly that I could have changed the whole 11 and they wouldn't have much to complain about -- apart from Jussi," the manager said, once again exonerating his keeper Jussi Jaaskelainen of any blame.

Allardyce was furious that his players could plumb such depths, having hit such heady heights in their opening day demolition of Charlton Athletic, and suggested they were not switched on for the Fulham game.

"I can only think the players just didn't get themselves in the right frame of mind and let themselves become a little complacent after their outstanding victory of the week before," he said.

"That shouldn't happen to a team that only had one player without Premiership experience.

"Everybody else, apart from Julio Cesar, has got hundreds of games behind them ... that's what made me so bitterly angry and disappointed."

Allardyce has not said what changes he is considering, but former Real Madrid and Spain legend Fernando Hierro could come into the reckoning after at least showing basic passing skills when he was sent on for the last 15 minutes at Fulham.

Having no new injury problems at least gives the manager the scope he needs to make changes, although neither of his new signings -- El-Hadji Diouf and Blessing Kaku -- will be considered.

Senegal striker Diouf, loaned from Liverpool, is still in Paris completing the formalities of his work permit application while Nigerian midfielder Kaku, who signed from Ashdod in Israel for an undisclosed fee, will need time to acclimatise before he is ready for the Premiership.

Allardyce, who feared last week that the Kaku deal might collapse because of a problem over the player's medical, said: "Medically, it's not as big a risk as we thought it would be.

"He's come from Israel and we know a little bit about him from seeing him on trial and from Jay-Jay who has played with him for Nigeria. He's been a very good player in Israel but I see him as a potential rather than an out-and-out first team player."