Celtic are back in action on Saturday night, when they take on a good-looking St Mirren side that only has two less points so far. St Mirren are second having won three of their first four games, drawing the others.
But the Hoops are also unbeaten, and they have a 100% record after defeating Aberdeen comfortably during the week to make it four from four. The Bhoys haven't really been tested, in truth, but this has all the makings to be their first real test.
Ahead of the game, we have put together the likely Celtic starting XI to start the game, with Martin O'Neill now having a bigger squad to call upon due to a flurry of late signings.
GK - Viljami Sinisanlo
There is increased competition with Sam Johnstone, but Sinisalo has been playing really well, so he will likely remain the starter for now.
RB - Colby Donovan
There is a decision to be made here, with new signing Jordan Lotomba available, but Donovan has been doing well, so he should keep his place.
CB - Auston Trusty
Barring a surprise, Celtic will likely stick with the defensive partnership that is doing a fine job.
CB - Cameron Carter-Vickers
Carter-Vickers has arguably been Celtic's best defender so far this season. He will surely keep his place.
LB - Liam Scales
What choice do Celtic have but to play Scales out of position here? Kieran Tierney and new signing Landon Emenalo are both out injured.
CDM - Callum McGregor
McGregor shook off illness to start last time out, and he will surely start to offer his experience in a tricky game.
CDM - Alex Oxlade-Chamberlain
The holding midfielder has offered really balance to the midfield over the last week or so, and this would be a questionable game to rotate the midfield, given how good St Mirren have been.
CAM - Benjamin Nygren
Nygren is pretty irreplaceable when fit, but Celtic do now have some depth behind him, which is a real positive.
LW - Yang Hyun-jun
Yang has his best game of the season against Aberdeen, looking really dangerous, and he will surely keep his place on the back of that performance.
RW - Haissem Hassan
Hassan did really well here during the week, and he is likely to keep his place, albeit with his minutes seemingly still being managed.
CF - Camilo Duran
Duran is almost certain to play, with Kasper Hogh still out injured for this weekend.
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