Ronny Deila will continue the quest to bolster his Celtic squad before the transfer window closes but will not recruit for the sake of it.
The Hoops boss was speaking ahead of his side's second-leg Champions League second qualifier against KR Reykjavik at the BT Murrayfield Stadium in Edinburgh tonight, into which the Scottish champions take a one goal lead.
Celtic supporters who make their way to the capital will see a familiar line-up as Deila has only added former Hearts and Sunderland keeper Craig Gordon to his squad so far and he may not even be on the bench if regular number two Lukasz Zaluska is named as back-up to England cap Fraser Forster.
However, the former Stromsgodset boss insists he will only sign players who will improve the Parkhead side.
"We are working to try to get someone in but it is also about finding the right ones, I am after quality," he said. "
"It has to be someone who can come straight in and do something at once and that is very difficult. Or get a player who will be a good player in a while
"Some clubs haven't started training yet again, so we have to find the right options.
"If the players aren't going to make the team better then it is better to wait. But we hope to get players in to make the team better and make Celtic better as a club."
The match is being played on a brand new pitch at the home of Scottish rugby as Celtic Park is out of commission due its use in the Commonwealth Games in Glasgow but both Deila and Charlie Mulgrew, likely to be captain again in the absence of Scott Brown, who is out long term with a hamstring injury, praised the surface.
Celtic will face either St Patrick's Athletic or Polish side Legia Warsaw in the third qualifier if, as expected, they see off the Icelandic side.
Mulgrew is looking to take the next step towards the lucrative Champions League group stages.
"It was good to come away from the first-leg with a clean sheet," he said. "We are hoping to score a few more goals in the second game.
"We know what we need to get through and we are going all out to do that.
"The Champions League is huge. We all want to be involved in it. We have been involved in it in the past two seasons and it is where everyone wants to be. We are ready for it."