Neil Lennon hopes Charlie Mulgrew is just the first of several new recruits to his Celtic squad but insists there will not be wholesale changes at the Parkhead club.
Mulgrew returns to his former club on a three-year deal after his contract at Aberdeen expired at the end of the season.
The Hoops' boss expects South Korea international defender Cha Du-ri to sign in the next 48 hours following a medical and revealed that talks with Sol Campbell and Jimmy Bullard are on-going.
Speaking at the club's Lennoxtown training complex as his players reported back on the first day of pre-season, the Ulsterman also revealed that Koki Mizuno and Zheng Zhi have left the club and he is to discuss with Stephen McManus the possibility of signing a permanent deal with Middlesbrough after the Scotland defender spent the second half of the season there on loan.
However, Lennon insists he is looking for evolution rather than revolution.
“Charlie has signed and I am pretty pleased about that,” he said.
“I am hoping that Cha Du-ri gets completed over the next couple of days, he's having a medical today.
“It is early days (with Sol), we have had contact over the summer and talks are on-going at the minute.
“I've also had dialogue with Hull and Jimmy on a personal level and again it is still in its initial phase. So we will be looking to add quality and experience.
“But it won't be all change - not at all. Obviously some players have already gone but there won't be wholesale changes.
“There will be a few changes and additions to the squad.
“I think we have good players here anyway and I would like to keep the better players that we have got. I think we proved that in the last eight games of the season that they can compete at the SPL level and win games.”