Lennon was found guilty of entering the 'playing zone' within 15 minutes of the final whistle of Celtic's 3-1 Scottish Premier League defeat by Motherwell last month.
The Northern Irishman was still serving a three-match touchline ban at the time, but the Scottish Football Association put back his punishment, clearing Lennon to sit in the dugout for the final against Hibernian at Hampden.
Lennon previously served a touchline ban during the 2011 League Cup final defeat by Rangers and is relieved to have been given a reprieve.
"It is very important and I am just looking forward to it now," he said.
"I played in plenty of cup finals so to take the team out for another one is pretty special.
"I missed a cup final a couple of years ago and it feels there is a part of you missing.
"You are not able to do your job properly, you can't affect the players as much as you want to.
"These opportunities don't come round very often so to lead the team out on Sunday will mean a lot to me."