The Trotters have endured a shaky start to the season after relegation last season and are without a manager following the sacking of Owen Coyle, though Dougie Freedman is being tipped for the job.
Retired Spaniard Campo, who spent six years as a player with Bolton between 2002-06, is not interested in returning as a player or manager.
But the 38-year-old has penned a letter to the club's fans offering his help in some other capacity.
The letter, published on Sky Sports pundit Guillem Balague's official website, read: "When I left in 2008, I wrote you a letter, because I never had the chance to say a proper goodbye. I was overwhelmed by the support I received in response to that letter - the sheer number of you who took the time and trouble to thank me for the contribution I made to your club's history was amazing.
"This time, I am writing to you to offer my services to shape the future of a club which has a special place in my heart. Although the way my departure from the club was handled did upset me, I was never bitter or resentful, and I have always wanted the club to do well.
"Although it has been a while since I was part of your club, I still remember the six wonderful years I spent as a member of the Bolton family and the experience I had during what what they refer to as the 'golden age' of Bolton. I really valued my time there.
"When I initially joined the club on loan from Real Madrid, I was not expecting to love Bolton as much as I did. After six seasons, I have many fond memories of my time spent there, and particularly the unique relationship I had with you, the fans.
Campo continued: "It is sad for me to see Bolton's poor start to the season, and the subsequent sacking of Owen Coyle. But that's the name of the game; if you're not up to scratch and maintaining the standards of the club, it's time for someone fresh to take over the reins and ensure that the club's future will be more promising.
"I am sure that Coyle had good intentions for the club, but unfortunately, he has not been able to rectify Bolton's performance.
"Personally, it would be a dream for me to return to the Reebok Stadium, where I spent several seasons playing. However, I would not be returning as a player, or even a manager or a coach. But if anybody at the club thinks I can be of any use to Bolton Wanderers, here I am. In a way, I would be giving something back to the club which provided me with some of the best years of my football career.
"I am eager to see a return to the glory days of Bolton; we have had success before, and, with the right guidance, there is absolutely no reason why the club cannot turn its fortunes around, and return to the Premier League."
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