Never let it be said that the disco lights aren’t getting a significant airing.

Out they came on Saturday as Celtic started their defence of the Scottish Cup with a special flashing moment just for debut boy Timothy Weah.

On his cameo appearance for the Parkhead club, the 18-year-old American internationalist looked as though he might be rather comfortable spending his time in the spotlight.

As comfortable on the pitch as he is composed and articulate off it, Weah seemed to inject a sprightliness into Celtic’s forward line when he and Mikey Johnston came on for the latter stages of the game.

By then, of course, Airdrie were flagging, the game was won and Celtic were always going to turn the screw in the final stages. But even still Weah looked capable of causing a little bit of excitement with his goal itself as he was alert to Dedryck Boyata’s throw-ball – possibly intended for a different recipient – to turn and drive the ball into the net.

It is a sign of the teenager’s confidence that he celebrated the goal before it had hit the back of the net.

Weah’s striker confirmed Celtic’s progress into the fifth round of the William Hill Scottish Cup on an afternoon when it never appeared to be under any real threat.

There was an early indication that the hosts might make it interesting for their visitors when Scott Sinclair’s penalty was saved by Airdrie keeper David Hutton who correctly guessed that the effort was going low to his right but Celtic spent the majority of the game camped inside Airdrie’s half.

Scott Bain, given the gloves for this Scottish Cup run, was forced into one impressive multi-layered stop on the cusp of the interval but, that aside, could have watched the rest of the time from the stand.

Sinclair atoned for the penalty miss with a brace which ought to have been a hat-trick. The winger was wrongly flagged offside in the second period which would have allowed him to net his third of the day but while the call might have been an irritant, it was never going to have any significance on the scoreline.

Hidden amongst what was fairly mundane afternoon for Brendan Rodgers’ side was a little bit of the remarkable; the straightforward win over Airdrie was the 23 consecutive Cup win for Rodgers since he arrived at the club two-and-a-half years ago, a run of form that is worth consideration.

That consistency, though, is what is now sought for in league duty. The Parkhead side have a busy month as they potentially look to pull away from the rest of the pack.

Home games against St Mirren on Wednesday night and St Johnstone on Saturday will reacclimatise them with league responsibilities for the first time since returning from their winter training break in Dubai and for the first time since losing so meekly at Ibrox to Rangers at the end of the year.

Interestingly, however, Celtic’s pitch might not hold up to such scrutiny. The Parkhead side began the instillation of a £1.5m hybrid surface at the end of last season and while it is understood that it can take up to two years to bed in, the pitch seemed to easily carve up on Saturday afternoon.

Of more immediate concern, though, is the personnel that Rodgers’ has available. It is understood that more players are still being pursued with a few could leave the club this week to free up space but the loss of Kieran Tierney is felt by the Parkhead side.

Izaguirre took his place at the weekend and with the Scotland internationalist not due to start training until February, it is a concern for Rodgers.

Nir Bitton was back for the first time in almost a year at the weekend after returning from extensive knee ligament damage. The Israeli internationalist will offer something new in the middle of the park in terms of options for Rodgers.

It was Weah, though, who really stole the show. Which might have added a little to the pressure Olly Burke might feel.

The 21-year-old started the game up front in the absence of Odsonne Edouard but never looked entirely comfortable. In fairness to Burke, he has played so little football this season that the likelihood of him struggling for the 90 minutes was always going to be high.

“He has incredible talent and is a good technician,” said Rodgers. “We’re working on his game in terms of his movement and runs. Physically he’s so fast and has great attributes. I thought he did well.

“He’s very young he’s certainly nowhere near the finished article but he has so many attributes and strengths and I love working with those kinds of players - giving him another idea of the game will hopefully see him improve as a player. So much has happened to him in the last few years but, what we do here, we try to give young players an environment to learn and play the game.”