'We had a big chance through Odsonne Edouard after seven minutes and then had a period of 15 minutes where we did well.
The Hoops boss will have to dig into his squad for the Europa League Group B game in the Red Bull Arena after midfielder Tom Rogic joined the list of absentees which include the suspended James Forrest, injured skipper Scott Brown and striker Leigh Griffiths, while defender Filip Benkovic is a doubt.
"I don't care if Newcastle are looking at him and thinking that he might be the man if they part company with Rafa Benitez or if Leicester are thinking that he might be a better option than Claude Puel", Hartson writes in the Evening Times. "We've brought the form back into our game".
We'll have a look at Tom Rogic to see where Tom is at.
"It's about going and performing and taking that confidence of going to play and not being frightened to make mistakes".
"We're playing against one of the top teams in Germany but we still have to show our way of playing and when we do that we know we can cause problems".
And despite his squad limitations, Rodgers is confident his side have enough to forge a result.
While Lustig believes prevailing against league leaders Hearts will be a hard ask, he has also pointed to Celtic's recent domestic results as evidence that Brendan Rodgers' side are getting back to the kind of form they displayed in recent seasons.
"I think we can still gain in the performance tomorrow".
Celtic are now third in their Europa League group, three points behind leaders Red Bull Salzburg.
Rodgers said: "Jozo looks like he'll be struggling".
"The players who have come in have been waiting a long time".
"You want your best players available".
However, Tierney - who captained the Scottish Premiership champions in midweek - says Celtic just have to get on with it.
They were unable to get back to winning ways in Leipzig, however, as Matheus Cunha and Bruma scored in the opening half for the hosts.