Leeds director Peter Lorimer has spoken of the "extra spice" of the club's rivalry with Chelsea ahead of their Capital One Cup quarter-final clash.
The Whites entertain Chelsea at Elland Road on Wednesday night and it will be a first meeting since their relegation from the Premier League in 2004.
Lorimer, who played almost 800 times for Leeds across three decades in two separate spells, reflected on the past meetings of the clubs and the bitter rivalry that has evolved, despite being 200 miles apart.
Lorimer told Sky Sports News Radio: "It actually started at a semi-final at Villa Park in 66-67. I scored a goal late in the game and the referee said he hadn't blown his whistle and made me re-take it and we didn't get the goal. Chelsea went through 1-0 and from that minute the Leeds fans have had this rivalry with Chelsea.
"There were a lot of battles through the 60s and 70s obviously, with the two teams. It's a good rivalry, good honest football on the field, hard, and I just hope it's a good evening, this evening."
The clash is given further spice due to Ken Bates' association with both clubs. Bates owned Chelsea for a 21 year period from 1982, when he purchased the club for £1, until 2003, when he sold the club to Roman Abramovich. He then subsequently took over at Leeds in 2005.
Lorimer said of Bates: "Ken Bates has done a great job getting us out of the trouble we were in and now hopefully we can turn the corner and get to the Premier League, but this is a big game because we can see how far we've come.
"He rescued Chelsea when they were in the depths of despair, and ourselves. It's a big evening for him and I'm sure he will be very proud to see the two teams going out in front of a full house to think of the good job he's done in resurrecting two great football clubs."
Leeds have already knocked out Southampton and Everton earlier in the competition and Lorimer believes that the Whites have what it takes to progress to the semi-final draw on Wednesday evening after Chelsea's involvement in the Club World Cup in Japan.
He added: "I only hope that the first 15-20 minutes, we contain Chelsea, because they've had a long flight and everything so they're going to come out early in the game and try to stamp their authority.
"I think it's important that we don't go behind early - if we can keep in the game then the crowd will get louder and louder and get behind the team more and more - which can be a big bonus when playing at Elland Road with a very volatile crowd.
"We played well (against Everton and Southampton) - I hope the players can raise their game again and do the same again against Chelsea."