Defoe insists his team will not be distracted by all the permutations surrounding Sunday's games.
"We can't think about the other games and all the other permutations, we just have to think about ourselves. That will be our approach," he told Spurs TV Online.
"It's like a cup final for us on Sunday.
"Finishing fourth was the goal at the start of the season and if you look at our squad we should be finishing in the top four."