"We need now to make sure of fourth spot before we play Chelsea in the Champions League semi-finals," said Benitez.
"It needs to be out of the way so that everyone can concentrate on those two matches.
"We have no control over what Everton do in their game at the end of the week [at home to Chelsea] but we would hope that a win at Fulham would give us fourth spot.
"We have not quite secured fourth place yet. We need to keep going and win our next match at Fulham.
"I am not really worried about chasing third place now, let's just prepare the players for our next game.
"We must only think of finishing in the top four. That, and progress in the Champions League, is our priority."