with respect you can have little concept of the work involved to move the box - i have no idea how many customers it feeds - each one will likely need a new cable - also depending on the box it could need a new fibre pull - at best it will need reconnection to any other boxes it feeds or feeds from
there will be no good will - any decision to move it will be on a cost as is basis - as a personal opinion i dont think you will get anywhere - damage if that happens could well be charged back to you - its on a public footpath and was placed there with the consent of your local council - they will not get involved
so as i said forget moving for free - forget good will - think 5 figures if they even offer to move it - again my opinion is that they will simply say no
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Tony