Celtic manager Neil Lennon is hopeful of getting his first January signing in the coming days.
The Scottish champions have been linked with Slovan Bratislava striker Andraz Sporar and 21-year-old Polish striker Patryk Klimala of Jagiellonia Bialystok.
Lennon is keen to find attacking cover for Odsonne Edouard, with Leigh Griffiths and Bayo having been ruled out for an extended period.
Speaking from his squad's Dubai training camp, Lennon told Celtic TV: "We have had three or four important calls between the staff and the club and obviously patience is the key.
"January is a difficult month to bring players in. Other clubs know that when you are the buying club, agents do as well.
"However, we have a number of options and got our eye on a few players and hopefully we will have a result in the next few days."
Mikey Johnston and Mohamed Elyounoussi have also been carrying knocks in recent weeks.
Lennon added: "Already a couple of players have left in Scott and Lewis, we might streamline it a little bit more, but across the board we are looking to bring a few players in."
The Celtic boss has also been encouraged by the showing of another two wide players in Dubai.
Daniel Arzani is closing in on a comeback after a lengthy lay-off from the knee injury he suffered on his Celtic debut in October 2018.
Meanwhile, Marian Shved could make only his third appearance of the season as the defending champions prepare to begin their Scottish Cup campaign against Partick Thistle on Saturday.
"They have all trained well. It's good to see Daniel Arzani back and Marian Shved has had a good week," added Lennon.
How to follow the January transfer window with Sky Sports
Sky Sports will bring you the very latest news from the January transfer market with the return of three shows.
Start your day with Good Morning Transfers at 9am as our team of reporters bring you the latest news and insight. Transfer Talk then follows at midday delivering analysis of the biggest stories. Then join us at 7pm for the definitive round-up of the day's news with The Transfer Show.
Meanwhile, the Transfer Talk podcast will also be back at the turn of the year with more expert analysis from here and across the continent.
And as well as tuning into Sky Sports News, don't miss a thing with our dedicated Transfer Centre blog.