How do i make my tycoon regen?

Is there an easy way to make my tycoon regen? I have this script:

local ting = 0 --debouncer owner = script.Parent.Parent.Parent.OwnerName --This is the thing that holds the owners name

function onTouched(hit)

if ting == 0 then --debounce check
ting = 1 --activate debounce
check = hit.Parent:FindFirstChild("Humanoid") --Find the human that touched the button

if check ~= nil then --If a human is found, then

    local user = game.Players:GetPlayerFromCharacter(hit.Parent) --Find human among the players
    if (user:FindFirstChild("rig") ~= nil) then 

    local user = game.Players:GetPlayerFromCharacter(hit.Parent) --Find human among the players
    local message = Instance.new("Message") --make a message
    message.Text = "You already own a Tycoon." --Put text into the message
    message.Parent = user --Display message to new owner only
    wait(3) --Wait to let the message display for a while
    message:remove() --Remove the message from the new owner

    else

    local user = game.Players:GetPlayerFromCharacter(hit.Parent) --Find human among the players
    owner.Value = hit.Parent.Name --save new owners name for later.

    local own = Instance.new("IntValue")
    own.Name = "rig"
    own.Parent = user


    local message = Instance.new("Message") --make a message
    message.Text = "You now own this Tycoon!" --Put text into the message
    message.Parent = user --Display message to new owner only
    wait(3) --Wait to let the message display for a while
    message:remove() --Remove the message from the new owner




    script.Parent.Parent:remove()

    end
end

ting = 0 --remove debounce
end

end

script.Parent.Touched:connect(onTouched) --Start listening for button-touchers.

which is the owner script so when a player claims the tycoon it remembers it as there own. Where I am having trouble is when the player leaves I want the tycoon to regen for the next players to use it. As of now when the player leaves the tycoon still keeps the players name and continues to produce money. Can Someone help me?