Midfielder Ljuban Crepulja is back in Croatia with Slaven Belupo.
Slaven Belupo director Zvonimir Simunovic has been quoted by The Scottish Sun as saying that he has rejected Celtic's attempt to extend Ljuban Crepulja's trial.
Crepulja, 22, has been on the books with Slaven Belupo since 2013, and despite being a virtual unknown outside of his native Croatia, he has seemingly caught the eye of Celtic.
The midfielder arrived in Glasgow last week for a trial spell with Celtic, but has since returned to Croatia with no permanent deal in sight, despite The Scottish Sun suggesting that the player would cost just £300,000.
After signing defender Erik Sviatchenko from Midtjylland earlier this month, it remains to be seen whether Celtic go for more signings before next week's transfer deadline, but it certainly appears that Crepulja won't be making a permanent move to Celtic Park.
Now, Slaven Belupo director Zvonimir Simunovic has shed some light on the situation, and is quoted by The Scottish Sun as saying that Celtic boss Ronny Deila requested more time to look at Crepulja before making a decision over a full-time deal.
Simunovic says he couldn't allow that to happen as he needs Crepulja in the squad at Slaven Belupo, and Celtic seemingly aren't pursuing him anymore as a result.
"Celtic asked us to extend his stay because the manager needs more time but we couldn't agree," said Simunovic. "Ljuban is our most important player. It is unacceptable to be absent for few more days in this phase of preparation for the league, which starts again very soon," he added.
Do Celtic need more signings this month?