Saints will enjoy a warm-weather training camp ahead of their clash with Arsenal in two weeks time.
After the 2-1 defeat at home to Cardiff, he said: "For two weeks we have this result in our mind and that is the most horrible situation you can imagine.
"We must do everything to have clean sheets. I tell them every week. Because we can score and always have chances, we have the quality to win games.
"But it's not possible if you always need two or three goals to win a game.
"That's the focus on next week, I can guarantee you. I will also make a few changes to the defence, that's for sure."