Celtic fly out on Monday to Kazakhstan and assistant manager Chris Davies admits they are closing in on their second major signing of the summer, following Moussa Dembele's arrival.
The UEFA deadline for new players expires at the end of Thursday but one player can be added afterwards until the end of Tuesday
Celtic have been linked with moves for Aston Villa winger Scott Sinclair and Blackburn defender Shane Duffy.
Davies said: "We're hopeful of doing something but the most important thing, it's the right person
Possibly something can be done today (Thursday) but we have the option of the wildcard up until the day before the game, so it gives us a bit of leeway.
"It's a big enough squad so we want to bring players in that can improve the team.
"We know what we want but it's got to be the right person and the right deal
These things take a little time."
Source : PA
Source: PA