Thomas Rogne does not believe the Celtic squad needs any more strengthening ahead of their quest to wrestle the Clydesdale Bank Premier League title back from Old Firm rivals Rangers.
Sweden international defender Mikael Lustig officially joined the Hoops on January 1, and manager Neil Lennon has been linked with numerous other players in recent weeks and months.
"What happens in the transfer window is up to the manager and if someone comes in then great," said the 21-year-old Norwegian defender. "But I think we have a very good squad and we don't really need any new players."
Speculation continues about possible new recruits including Rapid Vienna striker Hamdi Salihim, while Nigerian midfielder Rabiu Ibrahim, 20, and Icelandic winger Ingolfur Sigurdsson, 18, played as trialists in a practice game against St Johnstone this week.
But speaking on Thursday at the club's Lennoxtown training ground, where he was helping promote ticket sales for Saturday's SPL match against Dundee United at Parkhead, where Celtic will look to at least maintain their two-point gap over the champions, Rogne played down the importance of the transfer window to the Hoops' title challenge.
He added: "I don't think we are desperate to sign new players but we will see what happens.
"It is important that we keep players and I think every player wants to stay. Everyone is really happy so that is important, of course."
Rogne is relaxed about the recruitment of Lustig, who provides further competition in the central defensive position.
"I have seen him play a lot of times and I have played against him once as well, so I know quite a lot about him," said the former Stabaek player.
"He is a very good player, he has done very well in Norway and in Europe with Rosenborg so he is a great addition to the squad. So it is good. We want good players here. That's why we are at Celtic, we want to play with good players, so it is good for the team."