The Blues have confirmed an attempt to buy back shares from the Chelsea Pitch Owners company, which was formed in 1993 to prevent the stadium in West London from falling into the hands of property developers.
Buck's intention to buy the shares, which are largely held by supporters, is viewed as the first step in a plan to move to a new ground and any such strategy would not be possible without full ownership of the pitch and stands.
But the chairman is adamant there are still a number of issues to consider and he claims the club are currently content at their Stamford Bridge home.
"At the moment we have had no discussions ongoing with any developer," Buck is quoted as saying in The Independent. "We still have not made the decision that yes, Chelsea want to move.
"More significantly, we are looking at whether our stadium might be the right size. With people [potentially] watching matches on their wristwatches in the great digital unknown, do we know what the right size is for Chelsea or any other club?
"At the moment I am saying we are happy at Stamford Bridge. We have no concrete intentions to move but just like any business looking at the future we look at anything that comes along."