Celtic midfielder Callum McGregor faces perhaps his toughest test yet against Copenhagen.
After leading the team from behind to win in the league, he now has a European tie to contest.
The Hoops are at an advantage with the away goal but it is still all to play for, potentially without Scott Brown.
McGregor could be skipper again and another victory will put him firmly in line to be Broony’s successor.
Callum McGregor on big Celtic chance against Copenhagen
The 26-year-old was man of the match against Kilmarnock after playing in Brown’s role.
McGregor’s men went a goal down early on before clawing three goals back to win the match.
All eyes are on Parkhead on Thursday night as the Danish champions arrive in Glasgow for the second leg.
Neil Lennon has been silent on the developments of Brown which could mean he misses the vital match.
That will mean McGregor will be back in the driving seat leading the team out to make potential history.
McGregor will want to prove he can be a future successor to Brown by leading against Copenhagen.
He might not have had the strongest game in the first leg, but he will be in an entirely different role on Thursday.
McGregor will be sitting back rallying the troops with a packed Celtic Park behind him.
The Scotland international will be taking a step back in an attacking sense, but instead will be breaking up play.
Some games are tailor made for certain players and Thursday night is one that can make a potential Celtic captain.
Fans know the Pollok born Bhoy is a capable player – but is he able to drive the team on to victory?
McGregor passed the first stage against Kilmarnock, winning man of the match, but the games come thick and fast at Celtic.
So much so that success under his guidance could potentially mean handing him the arm band permanently in the summer.
The chance is there to be taken and McGregor will work tirelessly to make sure everything goes to plan.