According to The Scottish Sun, Celtic are poised to wrap up a deal for Dinamo Zagreb defender Jozo Simunovic - which will again spark rumours over the future of Virgil van Dijk.
The Bhoys have made one signing already this weekend, with Manchester United defender Tyler Blackett joining the club on a season-long loan deal.
Even after landing Blackett, manager Ronny Deila appears keen on signing another defender, especially with The Mirror reporting that Bhoys star Virgil van Dijk is set to join Southampton in a huge £11.5m deal.
A replacement will certainly be needed if that is the case, and it seems they they are already moving in on another defender in Simunovic.
The Scottish Sun report that Celtic are on the verge of completing a deal for Simunovic, and the defender may even be in Glasgow tomorrow to finalise the deal.
The 21-year-old centre back is highly rated with Dinamo Zagreb, and he appears to be ready to leave his native Croatia in order to join Celtic before Tuesday's transfer deadline.
With Simunovic likely to be a direct replacement for Van Dijk, he certainly has a huge act to follow after the Dutchman's superb two-year stay at Celtic Park.
Yet with height, strength and great potential, Simunovic could have a great career ahead of him at Celtic - or he could even end up emulating Van Dijk and end up in the Premier League.