Well you can try to select the right side of the head and background, copy and with the new layer of the selection (inverse), maybe you have to work in minor details but i think it blend well looking at the picture.
When you make the selection remember to blur the edges.
Taking away the hand and bottle would leave a 'gap' in the image.
To fill that gap you'll need to replace the 'information' behind the hand and bottle.
This missing information needs to be replaced piece by piece with information available on the image.
Select a part of the bench, copy and past it
Every 'added' piece needs to be refined to match the picture.
With a picture where there's only a small part of information to replace the task is easy.
In this case it is still possible but with a huge amount of work and raffinement.
Sometimes it is easier to 'recreate' the scene without the disturbing element, if possible.
In this case there's a lot of information to replace and to make it more difficult, there's the hair of the girl.
If by any chance you have the opportunity to redo the photo, that would be the best result.