A draw in their final Europa League game will be enough for Tottenham to progress after they drew 0-0 with Lazio.
Spurs made hard work of their Group J clash and indeed they had the brilliance of goalkeeper Hugo Lloris to thank for keeping the Italians at bay.
Libor Kozak, making a rare start, missed a hatful of chances for the hosts, but Lloris was equally important in keeping Lazio at bay.
Their draw against the Rome-based club did not come without controversy, however, as Lazio fans chanted "Juden Tottenham" at the away fans in an apparent anti-Semitic jibe at the end of a troubled 24 hours for the visiting fans.
Lazio, and their icon Paul Gascoigne - who was guest of honour in the Italian capital - would have hoped for the football to do the talking, but the apparent anti-Semitic chanting will disappoint UEFA, who fined the club for monkey-chanting during the reverse fixture in September.
Gascoigne's appearance on the pitch had rekindled memories of a glorious era for Lazio and Spurs, but the tie proved to be anything but a classic.
Libor Kozak, making a rare start, missed a hatful of chances for the hosts, but Lloris was equally important in keeping Lazio at bay.
The Frenchman, chosen ahead of Brad Friedel, denied Kozak twice in the first half and was a steady and assuring presence throughout.
Tottenham rarely threatened - although Gareth Bale's early strike should not have been ruled out for offside.
But Panathinaikos' victory over Maribor means Tottenham only have to draw their final game at home to the Greeks next month to qualify.
The match official also implicitly criticised Chelsea for going public with the complaint before the Football Association had even launched a formal investigation.
Clattenburg, 37, found out on Thursday he will face no action from the FA over a complaint by Chelsea that he said "shut up you monkey" to their midfielder John Obi Mikel last month.
The FA decided there was "no case to answer" and Chelsea have accepted the decision, but the Blues issued no apology and pointed out that the FA accepted the complaint by Mikel's team-mate Ramires, though erroneous, was "made in good faith".
Clattenburg spoke of his relief and said the last few weeks, during which he has taken no part in refereeing matches, had been "the most stressful of his life".
He said: "To know you were innocent of something but that there was the opportunity for it to wreck your career was truly frightening.
"Racism has no place in football and this experience should not discourage those to speak out if they genuinely believe they are a victim of abuse.
"However, there are processes that should be adhered to in order that any investigation can be carried out in a manner that is fair for all parties involved.
"I know first-hand the ramifications of allegations of this nature being placed into the public domain ahead of a formal process and investigation. I hope no referee has to go through this in the future.
"I am looking forward to putting this behind me and concentrating on refereeing in the Premier League and other competitions."
Clattenburg also paid tribute to the support from his colleagues and family and the referees' trade union Prospect, who have called for Chelsea to apologise and compensate the official.
He added: "The messages of encouragement from those inside and outside of the game have helped me through the most stressful time of my professional life."
Mikel was himself charged by the FA today for using threatening words or behaviour - an alleged breach of FA Rule E3 - after going into the referees' changing room after the match in question, Chelsea's 3-2 defeat by Manchester United at Stamford Bridge on October 28.
Chelsea insisted that they had a duty to report the claim against Clattenburg, but that Mikel would not deny the charge against him.
A club statement read: "The FA states Chelsea took the correct action following the Manchester United match and encourages all players who believe they have been either subject, or witness to discriminatory abuse, to report the matter immediately to the match officials on the day, and in turn to the FA.
"The club also notes the charge brought against John Mikel Obi. While the player does not deny the charge, he will request a personal hearing to explain the mitigating circumstances.
"With regards to the Mark Clattenburg decision, the club accepts the case is now concluded and notes the FA states the allegation was made in good faith."
The FA's decision came after all the evidence was considered by independent QC David Waters, who ruled Ramires' claim was not supported by any other evidence and disputed by the other match officials.
An FA statement added: "Moreover it was contradicted by other witnesses and does not cross the evidential threshold required to bring a charge against Mark Clattenburg.
"Having considered Counsel's opinion, and in view of all the circumstances of the case, the FA does not believe that there is a case for Mr Clattenburg to answer."
The episode has caused the Premier League to seek to record all match officials' conversations during games in the future.
Referees chief Mike Riley, general manager of Professional Game Match Officials Limited (PGMOL), said: "It is PGMOL's considered view that Mark is completely exonerated of the allegation and he will return to active duty shortly without any stain on his character or reputation.
"The verbal and visual facts do not support any of the allegations made against him. They make it clear that Mark did not use any inappropriate language towards any Chelsea player.
"Regrettably, Mark has had to endure four weeks that have brought massive disruption to his professional and personal life through no fault of his own. We are all relieved that this is now behind him and that he can return to doing something that he loves.
"To reduce the risk of an episode of this nature being repeated, PGMOL will introduce recording of the referees' communication system on a private basis."
The FA's decision came an hour before Chelsea's new interim manager Rafael Benitez gave his first press conference at the club, with the former Liverpool boss insisting he had "just arrived and I want to concentrate on football issues".
The 20-year-old will go straight into the Alex squad for the clash with Crawley at the weekend.
The attacker has scored seven times in eight starts for the Magpies' Under-21 side this season and is excited by the challenge awaiting him at Gresty Road.
"I was buzzing when I found out I was going to Crewe," he told Toon's official website.
"I hope to play every game and just learn what proper football is because it's going to be a lot different to reserve football. It means more and I'll be playing with and against experienced players now.
"So I'm going to learn a lot, and hopefully come back a better player."
Chilvers had a loan spell at Vale Park last season when he was on the books at Notts County, making 12 appearances for the Burslem outfit.
Vale were unable to make a move for the 31-year-old when he was released by the Magpies as they were in administration.
Manager Micky Adams told the club's official website: "After a frustrating spell, we are now in the position where we can bring in new players and I thank the new owners for allowing us to act swiftly to do that.
"We know from working with Liam previously that he will add a calm and experienced head to the defence, having played for the majority of his career in a higher division.
"He also knows the club and our aspirations and I, along with the rest of the staff and players, are looking forward to working with him until the new year."
Centre-half Chilvers will stay with the Valiants until January 5, 2013 and will go straight into the squad for this weekend's League Two fixture away at Aldershot.
The versatile 31-year-old has not featured for the Cherries since Boxing Day 2011, but finished last season with Aldershot and came on as a late substitute in a defeat to the Pilgrims in April.
Bournemouth boss Eddie Howe has spoken in recent weeks of the need for fans' favourite Molesley to get some valuable playing time under his belt having not made a competitive appearance in 2012/13.
Although he has been injury-free since Howe's return to the south coast, Moseley has found his first-team chances restricted by the form of those players in front of him.
