It’s the one change staring Martin O’Neill in the face ahead of the St Mirren semi-final.
And if he doesn’t make it, Celtic could be heading for another frustrating afternoon.
Because right now, the numbers don’t lie. This Celtic side isn’t scoring enough goals and it’s going to cost them.
Three in their last three games. That’s it.
Meanwhile, Rangers have banged in 14 in the same period, with nine different scorers. Hearts have hit six – double Celtic’s return.
At this stage of the season, when every game is must-win and the margin for error is gone, that’s not just a concern. It’s a red flag.
And here’s the thing, it’s not exactly a mystery why.
Martin O’Neill has come back into the dugout twice this season and both times he’s gone with a lone striker. It’s a far cry from the system that made his name at Celtic – two forwards, aggressive, direct, relentless.
Back then, he had the luxury of Henrik Larsson, Chris Sutton and John Hartson. Elite operators. Goals guaranteed.
Now? It’s a different story.
Johnny Kenny is somehow still Celtic’s top scorer up front with four goals and he left in January. Kelechi Iheanacho has three, two from the spot. Tomas Cvancara has two, one a penalty. Adamu? One goal. Callum Osmand? One and he’s been injured for months.
That’s not a functioning strike force. That’s a problem.
Even Daizen Maeda, who’s spent most of the season out wide, has just seven goals, with his last goal involvement coming back in January.
So why persist with one up top?
It’s not working. It hasn’t been working. And with five games left in the split where Celtic need perfection, there’s no time to keep hoping things will click.
They need a change. A proper one.
And it doesn’t have to be complicated.
Forget the three at the back, fans are still recovering from the Wilfried Nancy experiment. Keep it simple. Go 4-4-2.
Two strikers. Two problems for defenders instead of one.
Even pair Maeda with Cvancara. Let one stretch the game, the other hold it up. Give Celtic a focal point and a runner. Something, anything, that asks different questions of opposition defences.
Because right now, Celtic are too easy to play against.
Iheanacho’s fitness is a concern, Osmand is just getting back, and none of the other options are exactly banging the door down.
But sticking with one striker isn’t protecting the team, it’s limiting it.
Martin O’Neill doesn’t have his old strike force. Everyone knows that. But he still has to find a way to get more out of what he’s got.
And ahead of a massive semi-final, the solution feels obvious.
Two up top.
Or risk another blunt, frustrating Celtic performance when it matters most.
No matter what system we play Cvancara should be nowhere near it. He is absolutely dire.
The whole strikeforce is dire.