Celtic may be focusing their attention on today's Old Firm derby, but away from the clash with fierce rivals Rangers, there is also the small matter of the transfer deadline.
The transfer window will slam shut on Monday evening, and Celtic have been fairly quiet throughout the month in terms of transfers.
Their only agreed arrival is that of Dundee United winger Gary Mackay-Steven, with the Scottish international agreeing a pre-contract agreement with Celtic.
That means that the 24-year-old will arrive on a free transfer when his contract at Tannadice expires this summer, but Bhoys manager Ronny Deila recently admitted his interest in paying a fee to bring the former Liverpool youngster to Celtic Park this month.
Speaking after helping his side come from behind against Aberdeen in Scottish League Cup, Mackay-Steven told STV that it's up to the clubs to decide his immediate future.
"That's out of my hands," Mackay-Steven said. "That's for the clubs to discuss. I just want to concentrate on what I can do, and what's in my hands."
"That was my job today, to do my best for the team and I'm absolutely delighted that we got to the final. It's a nice feeling," he added.
Mackay-Steven will join Celtic on a free transfer this summer regardless, but with the Bhoys aiming for success in the league as well as the Europa League, an extra creative body could help them.
That's certainly something Mackay-Steven would offer, and with reports from the Daily Record suggesting that Dundee United would sell him for £250,000, he should be available within Celtic's budget - but they may have to move quickly to beat the deadline.