The former Tottenham, Arsenal and England defender, who will turn 34 on the day Pompey begin their UEFA Cup campaign next season - September 18 - has a year left on his contract but speculation has been rife in the last few weeks that he would on the way out this summer.
But he is the excited at the prospect of European football next season with Pompey and insists he wants to help the club improve.
He said: "I hope it can be even better next year. We have Europe to play in and we must try to keep improving.
"I am happy here and see no reason to leave. The fans are superb.
"I have thought about playing abroad but if that was going to happen it would have been a couple of years ago. I honestly will have no regrets if I end my career without do that.
"Wembley was a really emotional occasion on Saturday. It meant so much to everybody associated with the club and I really felt it personally."