If Celtic were smart they'd play the long game here and realise the 10 is gone, so instead make plans now to replace Lennon in the summer with a new manager who will get time to build a new squad over a couple of seasons with the money they've stowed away from the past decade
The entitled segment of the Celtic support won't like it, but chasing instant satisfaction is what caused Rangers to fall behind to begin with, dating all the way back to McCoist spending silly money on journeymen when they were down in the 4th tier instead of investing in youth
Let's face it, a big reason why Rangers are winning now is more down to Celtic taking their foot off the peddle more than Rangers actually being that good. They've had some impressive results this season, but they are the same results you would have expected Rodgers' Celtic to have gotten a couple of seasons back. Rangers have improved somewhat, but Celtic have also regressed, and the combination of those two factors is why (Barring the biggest bottle job in footballing history) Rangers will be raising the flag next season (Likely with a full Ibrox if the vaccine works as we all hope it will)
Rangers have given Celtic a template on what NOT to do when your era ends, and they would do well to learn from it whilst there's still time