Spurs suffered the added agony of being pipped for second place by the Gunners.
“It definitely makes it hard because we know how much it means to the fans and to the club,” he said.
“When people think they’ve had a bad season and we’ve had a good one yet they still finish above us, it hurts.
“And it will leave a bad taste in the mouth over the summer.
“We just haven’t been good enough. We needed to finish the season off strong but two points from the last four games is unacceptable considering how we played for the rest of the season.
“All we can do is apologise to the fans.”