Stephen McManus has told potential Celtic targets that Scottish football 'is no backwater'.
The SPL champions have been linked with players from all over Europe as Gordon Strachan prepares to strengthen his squad ahead of the new season.
The likes of 32-year-old Middlesbrough midfielder George Boateng and Liverpool winger Harry Kewell, 29, have been mentioned as possible arrivals this summer.
McManus accepts that Celtic will not be able to compete with the top Premier League clubs when it comes to bringing in new faces.
However, he believes it is important to bring in motivated players who still have their best years ahead of them, and not individuals who think they can cruise through to the end of their careers.
He said: "It's just the way the market's gone. The Premier League has been able to blow everybody away.
"But one thing is for sure, players who are maybe coming to the end of their career and who think this will be a nice wee place to play your football should know that it's not like that.
"Unless you have come from Manchester United, Chelsea, Liverpool or Arsenal, players won't understand the pressures of what it is like to play here in front of 60,000 fans who are demanding success constantly.
"A lot of the players found that out this year.
"It was our punters who were getting on the team's back and on the case of the manager.
"Scottish football is not a backwater. It is probably the opposite, it is a good place for hungry young players who want to be successful."