RONALD Koeman's relationship with Louis van Gaal has not been repaired since he fell out with his compatriot during their time together at Ajax.
The Saints boss held both arms aloft in a joyous celebration after the final whistle after beating Manchester United at Old Trafford and he was equally jubilant in his post-match press conference.
"I am very happy," Koeman said.
"We shook hands and that was enough. It was a good feeling, it was a better feeling than five weeks ago."
Southampton are now just 10 points shy of league leaders Chelsea and Koeman insists his team's Champions League credentials are genuine.
"We know that we have a strong team and that was important in the end of December," Koeman said.
"We got a point against Chelsea and the three points against Arsenal.
"That makes belief in the players.
"That is what you need if you are not a big club, belief in the players, not afraid of the name or the stadium. We learned that.
"I am not surprised we won today. We have organisation. If we keep the spirit and the organisation, we can keep in front in the table."
The only thing that disappointed Koeman was that Tadic removed his shirt in his goal celebration and therefore earned a booking.
"I don't like that," the former Holland defender said.
"It is a yellow card and a stupid fault, you get another and it is a red.
"When it is the last minute of the season and you have qualified for Europe, it is no problem. I don't like that. Keep your shirt on."