Celtic are to assess Borussia Monchengladbach striker Mohammadou Idrissou.
The Cameroon international will arrive at the club's Lennoxtown complex on Monday for a few days training.
"We have checked him out before and it is worth a look for him," said manager Neil Lennon.
The 31-year-old has spent the last 10 years playing in Germany with Hannover 96, MSV Duisburg and SC Freiburg among his former clubs.
Speaking after Saturday's 5-1 win over Dundee United, Lennon said he was confident of adding to his squad.
"Hopefully, we'll have a couple of new faces in this week," he revealed. "If not, the week after. We're working very hard behind the scenes."
Lennon denied that any goalkeeper he might sign is guaranteed to take over from Lukasz Zaluska, who was the sponsors' man-of-the-match against United.
"That's not necessarily true," he explained. "When we brought Lukasz in last season he did very well.
"He is playing well and he had no chance with the goal.
"But I need to bring a keeper in because if Lukasz gets injured then we only have Dominic Cervi and nobody else.
"So it is important that I bring another keeper regardless of Lukasz's form. We know he is a good goalkeeper."