The Ibrox club's financial meltdown at the end of last season and subsequent demotion to the Third Division means that cup competitions are the only way in which the Glasgow teams may clash.
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The prospect of the two coming head-to-head again took a boost after both sides progressed to the League Cup quarter-finals this week, with Rangers beating SPL leaders Motherwell impressively and Celtic comfortably seeing off Raith Rovers.
Lennon has admitted that Ally McCoist's team's display against Motherwell was to a very high standard, but says his mind is only occupied by the Bhoys' next game in the Champions League on Tuesday against Spartak Moscow.
"I thought the intensity of the game and the atmosphere was very good, Rangers scored two good goals and deserved to win the game," the Northern Irishman told Sky Sports.
"If we keep winning and they keep winning in competitions then there is a good chance of that (meeting) but we will see what the draw brings.
"The players love the [Old Firm] games. Whether we get an Old Firm game or not I don't know, it is not on my radar yet because it has not materialised.
"We are just pretty motivated into making inroads into the top of the table and obviously we have a big game coming up next week."