Gustav Isaksen is liked by Bologna and Celtic of Glasgow, but he prefers to stay in Rome. Lazio does not consider him untouchable and values his transfer between 18 and 20 million euros. An offer in this range could resolve financial constraints for Lazio.

Gustav Isaksen is reportedly being encouraged to leave Lazio. Celtic expressed interest in the final days of the summer transfer window with a loan proposal that included an option to buy, but this was allegedly rejected. According to reports in Italy, Celtic continues to be interested in the winter window, although Isaksen reportedly has reservations about moving to Scotland and would need persuasion from Celtic to agree to the transfer. Lazio chairman Claudio Lotito is eager to capitalize on Isaksen's potential transfer, particularly with the arrival of Arijon Ibrahimovic, which might signal the end of Isaksen’s stint at Lazio. Lazio is seeking a £12.5 million fee but is open to a loan arrangement with an option to purchase at the end of the season.

With Ibrahimovic's arrival at Lazio, Isaksen might contemplate leaving the club. Although he had previously expressed happiness at Lazio and a desire to build his career there, the club does not view him as indispensable. There has been interest from Bologna and Celtic of Glasgow, but no official offers have been made yet. The club is likely to consider a suitable offer, particularly to free up economic resources and roster spots. The possibility of his departure remains open until February 3, after which discussions will be postponed until the summer. His contract, signed in 2023 for 12 million euros, extends until 2028, but his performance has been inconsistent.

Gustav Isaksen had previously described a move to Celtic as 'boring' following the collapse of the transfer last summer. However, reports indicate that Lazio is eager to offload Isaksen this month to fund their January activities, with Celtic maintaining their interest from the winter window. It was reported that a loan move with an option to buy had been previously rejected. Lazio chairman Claudio Lotito is willing to consider a sale to free up cash for the club's manager, Marco Baroni, to push for Champions League places. Brendan Rodgers' side continues to pursue a deal.