Celtic majority shareholder Dermot Desmond believes their first away win in the Champions League group stages can propel them to a higher level.
A last-minute winner by Georgios Samaras saw Celtic beat Spartak Moscow 3-2 in Russia last night.
Desmond praised the job done by manager Neil Lennon and chief executive Peter Lawwell in helping Celtic return to the major European stage.
"It's great for Scottish football, great for Celtic supporters and hopefully they can kick on and improve from here," the Irishman told STV.
"I think we have a better squad now, we've got a lot of talent there and we will continue to improve the squad.
"Neil Lennon is certainly guiding them to better performances and there's a good bonding between the players.
"Under Peter's stewardship of the club all areas like scouting and sports science are improving.
"We will do our best (to reach the knockout stages) and everybody will give 100%."
He added: "We can't really determine the outcome at this point in time but it's a great turning point for the club and I think it's a tipping point for Neil and his team and hopefully they'll go from strength to strength here."